http://kimballgroup.forumotion.net/feed/? Latest topics Tue, 24 Nov 2009 12:14:16 GMT 10 http://kimballgroup.com/images/KGlogoBasic.gif http://kimballgroup.forumotion.net/feed/? http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/dealing-with-system-upgrades-supplier-renumbering-t357.htm KevinGurney I'm very new to the Data Warehousing arena from an OLTP background and have just had the sudden realization (as I'm sure many do) that it's not simply a case of OLTP with dimensions and surrogate keys My problem is such: 1. We have a system that has been through three upgrades in the past couple of years. 2. For each upgrade, the suppliers have been renumbered. For example, what was 1000 under system 1 can now be 3948 in system 2 and 3333 in system 3 The crux here, is the ... Dimensional Modeling and Data Architecture Tue, 24 Nov 2009 12:14:16 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/dealing-with-system-upgrades-supplier-renumbering-t357.htm#1452 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/dealing-with-system-upgrades-supplier-renumbering-t357.htm http://kimballgroup.forumotion.net/bi-and-analytics-f7/using-a-gis-tool-in-bi-t235.htm Robert.Hart At the recent course on Dimensional modelling the question was asked about GIS and BI. As a former GIS analyst I provided several comments but I forgot one item. The following link is to an ESRI addon for a client GIS tool called OLAP for ARCgis. It will allow you to connect from the GIS client tool to an OLAP data source (limited number supported). One of your spatial data sets (a map layer of sales districts for example) can connect to your OLAP sales district dimension based ... BI and Analytics Thu, 30 Jul 2009 22:00:11 GMT http://kimballgroup.forumotion.net/bi-and-analytics-f7/using-a-gis-tool-in-bi-t235.htm#1004 http://kimballgroup.forumotion.net/bi-and-analytics-f7/using-a-gis-tool-in-bi-t235.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/surrogate-key-for-different-granularities-t356.htm saeidziaei Hi In a life insurance context, I have products and benefits tables and also another table that specifies their relation. I thought combining them all in a single dimension is not a bad idea but I will have different facts which should point to either benefit or product. Which surrogate key should I use in my fact tables? I suppose this most be very common problem but have not been able to find an answer on the net. Like if you had sale fact on day grain and budget on the month grain, ... Dimensional Modeling and Data Architecture Sun, 22 Nov 2009 01:28:14 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/surrogate-key-for-different-granularities-t356.htm#1449 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/surrogate-key-for-different-granularities-t356.htm http://kimballgroup.forumotion.net/resource-requests-f10/10-tips-for-the-sucess-of-data-warehouser-t355.htm melina386 These ten tips (the perceptive reader will recognize eleven) will not guarantee success. Contrary to what some vendors will tell you, building a data warehouse is not a trivial effort. This short list should not be construed as an exhaustive detail of everything you will need to make your data warehouse successful - but it's a start. 1. Use what has already been purchased - Most installations have an RDBMS which will serve them well as the store for the data warehouse as well as a query ... Resource Requests Fri, 20 Nov 2009 07:41:26 GMT http://kimballgroup.forumotion.net/resource-requests-f10/10-tips-for-the-sucess-of-data-warehouser-t355.htm#1447 http://kimballgroup.forumotion.net/resource-requests-f10/10-tips-for-the-sucess-of-data-warehouser-t355.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/flat-table-vs-star-schema-t314.htm bi_at_nj We hear a lot of BI implementations using star schema. (with few dims snowflaked sometimes ) Why not choose a flat table with all data put together instead of a star schema? (well , this question may seem strange, but please help me out here) Few answers which I have answered to myself are: * Data retrieval with star joins perform better in star schema for the sake of reporting. * It all depends on the volume. What other possible answers are out there for FlatTable Vs StarSchema? - ... Dimensional Modeling and Data Architecture Sat, 31 Oct 2009 04:38:33 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/flat-table-vs-star-schema-t314.htm#1329 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/flat-table-vs-star-schema-t314.htm http://kimballgroup.forumotion.net/etl-and-data-quality-f9/hand-coded-etl-revisited-t35.htm Nigel Nichols
I read Gary Nissen's article, 'Is Hand-Coded ETL the Way to Go?', with interest.

Given that this was written nearly six years ago, I wonder whether the position has changed i.e. whather ETL tools are now more strongly recommended ober hand-coding.

Nigel]]> ETL and Data Quality Fri, 13 Feb 2009 15:41:10 GMT http://kimballgroup.forumotion.net/etl-and-data-quality-f9/hand-coded-etl-revisited-t35.htm#143 http://kimballgroup.forumotion.net/etl-and-data-quality-f9/hand-coded-etl-revisited-t35.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/dimensions-directly-tied-to-facts-vs-snowflaking-t335.htm kbarrett Hi all, Thanks in advance for your input on this. We are in the midst of a building out a portion of our data warehouse. The example here has to do with insurance data. Hopefully the discussion can be abstracted to a more generic modeling level. We are looking at two options. Option 1 (see image) joins a dimension directly to the fact table http://img691.imageshack.us/i/dimproductoption1.png/ Option 2 (see image) snowflake the table allowing for a view of the ... Dimensional Modeling and Data Architecture Wed, 11 Nov 2009 00:58:26 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/dimensions-directly-tied-to-facts-vs-snowflaking-t335.htm#1379 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/dimensions-directly-tied-to-facts-vs-snowflaking-t335.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/dimensional-attributes-t343.htm Arvind Hello, I have a requirement where a dimension can have potentially hundreds of attributes that can change over a period of time. The end reporting requirement is that we should be able to run the report where we select a combination of attributes. An example may help. In the Insurance company design, I have a Policy Dimension and then an Insured Item Dimension which are linked in a fact table. Now the Insured Item Dimension can have several attributes. For example, if the insured item ... Dimensional Modeling and Data Architecture Sun, 15 Nov 2009 15:38:20 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/dimensional-attributes-t343.htm#1402 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/dimensional-attributes-t343.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/eliminate-date-dimension-surrogate-key-t334.htm juz_b We have always been using a sequential surrogate key for all our Dimension tables, including the Calendar Dimension. There is also a different school of thought (only for Calendar Dimension) where instead of using sequential keys, replace it with a smartkey in the format of YYYYMMDD. I can appreciate this design since Calendar Days are always unique and sequential. Also note that this is the BASE CALENDAR, there are no Fiscal Attributes at all. Recently we came across a recommendation ... Dimensional Modeling and Data Architecture Fri, 06 Nov 2009 20:57:58 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/eliminate-date-dimension-surrogate-key-t334.htm#1373 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/eliminate-date-dimension-surrogate-key-t334.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/difference-between-alias-and-duplicate-tables-in-obiee-t350.htm Jaswanth Tell me about these alias and duplicate tables in repository of obiee and how they differ from one another and when we work on these tables Dimensional Modeling and Data Architecture Tue, 17 Nov 2009 05:10:05 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/difference-between-alias-and-duplicate-tables-in-obiee-t350.htm#1416 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/difference-between-alias-and-duplicate-tables-in-obiee-t350.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/alternative-views-of-data-t351.htm jchamizo
I have some data that have a particular granularity that I store in our Data Mart, but when I have to do most of the reports using the Data Mart I have to use a different granularity. For the input granularity I am using a Hierarchical Dimension, but in the output another Hierarchical Dimension must be used. How can I model this situation?

Thanks and best regards,
jchamizo]]> Dimensional Modeling and Data Architecture Tue, 17 Nov 2009 15:22:27 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/alternative-views-of-data-t351.htm#1417 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/alternative-views-of-data-t351.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/rapidly-changing-monster-dimension-t352.htm VK Hi Everyone, I have a list of more than 300 attributes, which are actually part of the fact table….(basically ..these values changes for each transaction level record in fact but belongs to a single dimension). that lot contains more than a 100 date attributes,.. around a 50 monetary values, more than 10 comments…n some flags. If I put Date surrogate keys into fact table for all these date values …it definitely clutters…the fact. Will that affect the performance????..the idea of ... Dimensional Modeling and Data Architecture Tue, 17 Nov 2009 16:49:52 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/rapidly-changing-monster-dimension-t352.htm#1419 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/rapidly-changing-monster-dimension-t352.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/building-a-recruitment-and-admissions-fact-table-t354.htm kikesegarra Hi I'm currently working in a Recruitment and admissions data mart for a university. Right now I'm designing the student fact table. In this fact table I want to track the prospective student events during the recruitment, application, and admission process. I'm not sure if I have to build a separate fact table for the prospect student because this is a process that involve different contact dates with the prospective student, and the application and admission part has only one or two ... Dimensional Modeling and Data Architecture Tue, 17 Nov 2009 19:50:57 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/building-a-recruitment-and-admissions-fact-table-t354.htm#1421 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/building-a-recruitment-and-admissions-fact-table-t354.htm http://kimballgroup.forumotion.net/bi-and-analytics-f7/sla-on-reports-t349.htm Arvind
thanks
Arvind.]]> BI and Analytics Mon, 16 Nov 2009 21:28:03 GMT http://kimballgroup.forumotion.net/bi-and-analytics-f7/sla-on-reports-t349.htm#1414 http://kimballgroup.forumotion.net/bi-and-analytics-f7/sla-on-reports-t349.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/cost-plans-for-projects-one-fact-table-or-several-fact-tables-t353.htm bustaliz Hi, I'm currently struggling with my Dimensional Model. It is about projects with their related cost plans. Every project starts with an initial cost plan (called WIPL), the project is saved as version 0 and the WIPL attribute and the ACTUAL attribute in the database is set to Y. If the cost plan is updated in the course of the year the project is saved as a new version, here it would be version 1 and the ACTUAL attribute in the database is set to Y. The ACTUAL attribute of version 0 is set ... Dimensional Modeling and Data Architecture Tue, 17 Nov 2009 18:37:40 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/cost-plans-for-projects-one-fact-table-or-several-fact-tables-t353.htm#1420 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/cost-plans-for-projects-one-fact-table-or-several-fact-tables-t353.htm http://kimballgroup.forumotion.net/etl-and-data-quality-f9/business-intelligence-tool-t345.htm Jaswanth How to work on repository ETL and Data Quality Mon, 16 Nov 2009 05:13:22 GMT http://kimballgroup.forumotion.net/etl-and-data-quality-f9/business-intelligence-tool-t345.htm#1404 http://kimballgroup.forumotion.net/etl-and-data-quality-f9/business-intelligence-tool-t345.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/the-best-design-for-edw-to-cover-common-and-un-common-processes-t348.htm Niaz Thanks for any help, suggestion, advise, etc. in advance... We have a big initiatives to integrate 20 JDEdward libraries (companies) into one through Oracle Enterprise One application. The OLTP will stay on Oracle Database and data will be migrated to new structure. There will be common processed for module such as HR, financial, Maintenance and Purchasing. However there will be many un-common processes such as Sales, Production, Inventory, etc. For Reporting, we will have Enterprise Data ... Dimensional Modeling and Data Architecture Mon, 16 Nov 2009 19:05:51 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/the-best-design-for-edw-to-cover-common-and-un-common-processes-t348.htm#1412 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/the-best-design-for-edw-to-cover-common-and-un-common-processes-t348.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/schema-roadblock-dimension-vs-fact-dimensions-w-fks-to-other-dimensions-t347.htm riafan Hello, I'm new to DM, I've picked up Kimball's DW Toolkit and DW ETL Toolkit - both great books. I'm designing a simple datawarehouse for eduction (K-12) and ran into a modeling question. I'm designing the portion pertaining to [homework] assigments. A teacher creates an assignment and scores each student on the assignment. So my thought was simple, an Assignment Dimension and an Assignment Score Fact. Here's where I'm hung up... The assignment has references to other dimensions, ... Dimensional Modeling and Data Architecture Mon, 16 Nov 2009 15:21:34 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/schema-roadblock-dimension-vs-fact-dimensions-w-fks-to-other-dimensions-t347.htm#1406 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/schema-roadblock-dimension-vs-fact-dimensions-w-fks-to-other-dimensions-t347.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/facts-at-different-levels-t346.htm VK Hi Everyone, The data I have has no perticular grain statement on which I can base my model.. Can someone suggest a better design for this scenario, Simplified version is,... I have 2 dimensions 1) Property.. Heirarchy is Site -> Building -> Floor. 2) Account (No heirarchies) The account values are available at different levels...(for some of the accounts it is at building level...and for some it is Floor level) There are some buildings with no floors. I ... Dimensional Modeling and Data Architecture Mon, 16 Nov 2009 14:19:47 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/facts-at-different-levels-t346.htm#1405 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/facts-at-different-levels-t346.htm http://kimballgroup.forumotion.net/business-requirements-and-program-project-management-f4/etl-tool-and-use-of-dimensional-hirearchy-t344.htm Jaswanth What is the role of ETL in reporting and how we use the dimensional hierarchy in Business layer of obiee Business Requirements and Program / Project Management Mon, 16 Nov 2009 05:01:48 GMT http://kimballgroup.forumotion.net/business-requirements-and-program-project-management-f4/etl-tool-and-use-of-dimensional-hirearchy-t344.htm#1403 http://kimballgroup.forumotion.net/business-requirements-and-program-project-management-f4/etl-tool-and-use-of-dimensional-hirearchy-t344.htm http://kimballgroup.forumotion.net/bi-and-analytics-f7/question-about-onformed-dimension-t342.htm DW_Beginner
I have product Dim, Time Dim and customer Dim tables in Sales data mart and Inventory data mart. These 3 are conformed dimension, but, does it mean that I should not store additional attributes like "product start date" and "product expiry date" in the same PROD_DIM table? should I got for a PROD_DIM history, inorder to maintain the conformed dimension on PROD_DIM?

Thanks,
DW Beginner]]> BI and Analytics Sun, 15 Nov 2009 07:02:00 GMT http://kimballgroup.forumotion.net/bi-and-analytics-f7/question-about-onformed-dimension-t342.htm#1400 http://kimballgroup.forumotion.net/bi-and-analytics-f7/question-about-onformed-dimension-t342.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/guidelines-for-fact-table-design-for-high-transaction-volume-and-high-of-measures-t341.htm kminboston Hi All - This inquiry could actually be two questions, but the requirement is really presentation of row-wise high volume transactional data in a column-wise (columnar) FACT table. Here is a sample transactional data set: Interval Date TimeUnit IDChannelValue 7/2/2009 12:00:00.000000 AM 24781143.75 7/2/2009 12:00:00.000000 AM 24781352.17 7/2/2009 12:05:00.000000 AM 24781152.35 7/2/2009 12:05:00.000000 AM 24781351.98 7/2/2009 12:10:00.000000 AM 24781151.96 7/2/2009 ... Dimensional Modeling and Data Architecture Fri, 13 Nov 2009 21:44:50 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/guidelines-for-fact-table-design-for-high-transaction-volume-and-high-of-measures-t341.htm#1398 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/guidelines-for-fact-table-design-for-high-transaction-volume-and-high-of-measures-t341.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/proving-performance-help-t339.htm AndyPainter I have an interesting problem, in that i need to be able to build confidence in a client that when the dimensional model has been deployed it will be a much more performant solution that they currently have. They currently have a copy of a transactional system schema that they query. The problem i have is how to demonstrate this, with limited resources. The proof of concept box i have, has very limited resources and i can't get anywere near live data, or a good representation of what ... Dimensional Modeling and Data Architecture Thu, 12 Nov 2009 15:17:48 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/proving-performance-help-t339.htm#1386 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/proving-performance-help-t339.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/modeling-price-information-collected-at-intervals-t340.htm jantzen Hi All, I'd appreciate some feedback on a dimensional model for representing prices collected from source websites at varying intervals. The incoming data is an observation of a price at a given point in time on the website. We want to be able to link prices back to when the data was collected, and also be able to query for the price that was in effect for a given period. My thought on how to accomplish this to have two fact tables: the first a transaction fact recording the price observation; ... Dimensional Modeling and Data Architecture Thu, 12 Nov 2009 21:01:10 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/modeling-price-information-collected-at-intervals-t340.htm#1392 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/modeling-price-information-collected-at-intervals-t340.htm http://kimballgroup.forumotion.net/etl-and-data-quality-f9/loading-data-without-key-t338.htm hennie7863 For a customer of mine i'm loading messages in a datawarehouse. The messages don't have an id(?!). With this message i want to load some dimensions and the fact. Are there best/Good practices of doing this? Currently i'm thinking of giving these messages a self generated key. Load the data and compare afterwards if the load went ok. So the dimensions are using this key and the fact. I'm not very happy with this solution. So i hope that someone gives me a better solution. O and we're talking ... ETL and Data Quality Thu, 12 Nov 2009 12:56:49 GMT http://kimballgroup.forumotion.net/etl-and-data-quality-f9/loading-data-without-key-t338.htm#1384 http://kimballgroup.forumotion.net/etl-and-data-quality-f9/loading-data-without-key-t338.htm http://kimballgroup.forumotion.net/deployment-and-maintenance-f8/real-time-datawarehousing-t122.htm Rik Declercq
There is a lot of buzz going on regarding real time datawarehousing. But how do you actually do this ? How can you implement conformed dimensions and conformed facts in real time ? How can you consolidate data real time ? Vendors promise applications that can make this happen but how is this possible ? Does anybody do this and if yes, how ?

Best regards,

Rik]]> Deployment and Maintenance Tue, 28 Apr 2009 11:52:43 GMT http://kimballgroup.forumotion.net/deployment-and-maintenance-f8/real-time-datawarehousing-t122.htm#535 http://kimballgroup.forumotion.net/deployment-and-maintenance-f8/real-time-datawarehousing-t122.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/conformed-dimension-partial-set-of-attributes-t337.htm dcow Hi Just looking for some confirmation that a dimension with partial attributes might still be considered conformed. For eample A dimension of batch ProdBatch PK BatchID Batch Name Product ID Product Name ... at an invoice Fact table level with a grain of Lineitem the line item would reference the Prodbatch Surrogate in the batcch dimension In another datamart Lets Say a Planning datamart The planning iis conducted at the product level and so my ... Dimensional Modeling and Data Architecture Thu, 12 Nov 2009 01:13:42 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/conformed-dimension-partial-set-of-attributes-t337.htm#1382 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/conformed-dimension-partial-set-of-attributes-t337.htm http://kimballgroup.forumotion.net/etl-and-data-quality-f9/scd-type2-etl-design-t331.htm KK_ETL Hi, We are trying to build a new data warehouse. Planning to capture the data as SCD Type2 in the Data Warehouse. However, the source system doesn't has any date fields for extraction. Let me explain the scenario: Table Name : DWS_CUST Scenario 1 Columns : Customer No (PK) Cust_Name Cust_address1 Cust_address2 Cust_address3 Cust_address4 Start_date End_date Data 1 XYZ 34 ... ETL and Data Quality Thu, 05 Nov 2009 17:02:46 GMT http://kimballgroup.forumotion.net/etl-and-data-quality-f9/scd-type2-etl-design-t331.htm#1369 http://kimballgroup.forumotion.net/etl-and-data-quality-f9/scd-type2-etl-design-t331.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/inventory-snapshot-gmroi-calculation-t336.htm Sophie We are developing a solution for our company. We currently have a sales cube and we are in the process of building an inventory cube. We are having a design problem in that we are not sure if we should include some of the measures which currently exist in the sales fact table (Qty Sold and Latest Selling Price) in the inventory snapshot table. We are thinking of creating a separate cube for inventory and defining GMROI as a linked measure group using both sales and inventory cube. What's ... Dimensional Modeling and Data Architecture Wed, 11 Nov 2009 21:00:13 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/inventory-snapshot-gmroi-calculation-t336.htm#1381 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/inventory-snapshot-gmroi-calculation-t336.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/model-for-storing-dimension-attributes-in-multiple-languages-t330.htm jefoster We have a traditional dimensional model and are about to add multiple languages to our source systems and need the option of reporting certain dimensional attributes in either the local language or English. Has anyone developed a flexible model for this that would allow adding multiple language versions of attributes without adding columns to the dimension table directly? 2 options I can think of are: 1) An abstracted translation dimension that contains the attribute name, language, ... Dimensional Modeling and Data Architecture Thu, 05 Nov 2009 01:29:39 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/model-for-storing-dimension-attributes-in-multiple-languages-t330.htm#1367 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/model-for-storing-dimension-attributes-in-multiple-languages-t330.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/scd-s-and-fact-tables-t329.htm jimbo1580 Thanks]]> Dimensional Modeling and Data Architecture Wed, 04 Nov 2009 15:07:19 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/scd-s-and-fact-tables-t329.htm#1365 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/scd-s-and-fact-tables-t329.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/customer-dimension-t313.htm kenny I am trying to model a Customer Dimension with Educational and Employment details and I want some advice on how to model this scenario A Customer can have several levels of Education like schooling, college, university, training (one to many realtionship) and A Customer could have been employed at several places throughout his/her life (one to many realtionship), If I create a record for each level of Education and Employment I would be storing too many records what is the best way to ... Dimensional Modeling and Data Architecture Fri, 30 Oct 2009 22:19:13 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/customer-dimension-t313.htm#1328 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/customer-dimension-t313.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/modeling-question-accumulating-snapshot-vs-event-transactions-t307.htm jimbo1580 I have a business process that has 6 distinct steps from start to conclusion for each instance of the process, we'll call it a case. Each case has two employees assigned to it, 1 owner and 1 co-owner. The owner and co-owner each have different responsibilities and each put in work to get the case to move through the process. The process can take anywhere from 2 months to 2 years to complete. Since the process can take some time, the owner and/or co-owner can change for a case over time. ... Dimensional Modeling and Data Architecture Fri, 23 Oct 2009 14:17:55 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/modeling-question-accumulating-snapshot-vs-event-transactions-t307.htm#1300 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/modeling-question-accumulating-snapshot-vs-event-transactions-t307.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/snowflake-scenarios-t318.htm bi_at_nj
But how do we figure out that these snowflaked dimensions are justified?

Specify scenarios where snowflaking is acceptable.

Thanks in advance,
bi_at_nj]]> Dimensional Modeling and Data Architecture Sat, 31 Oct 2009 04:48:55 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/snowflake-scenarios-t318.htm#1333 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/snowflake-scenarios-t318.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/date-dimension-t290.htm mark.tan Hi All, I understood Kimball way of implementation Date Dimension table. In a way, the lowest granularity date represent each record, with the following month, quarter and year attribute. However, what happen if the lowest grain of certain fact are at date level? They could be at monthly level, so is it right to tag the fact to the date dimension table using the first day of the month (e.g. 01-12-2008 for Dec 2009)? If not, can anyone tell me what is the best strategy? Best Regards, Mark Dimensional Modeling and Data Architecture Sat, 10 Oct 2009 07:34:20 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/date-dimension-t290.htm#1241 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/date-dimension-t290.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/partitioning-strategy-for-fact-and-dims-in-oracle-db2-sybase-t326.htm bi_at_nj
Thanks,
bi_at_nj]]> Dimensional Modeling and Data Architecture Sat, 31 Oct 2009 06:34:00 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/partitioning-strategy-for-fact-and-dims-in-oracle-db2-sybase-t326.htm#1341 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/partitioning-strategy-for-fact-and-dims-in-oracle-db2-sybase-t326.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/fact-table-indexing-strategy-t315.htm bi_at_nj Please explain the indexing strategy which is in use in your organisation for fact tables in your current database(oracle, sybase, db2) Specify volume as the indexing strategy may be based upon the volume of data. Is there a well laid out strategy for Indexing for fact tables? If so, what is it we follow for Fact Tables in Oracle? and If so, what is it we follow for Fact Tables in Sybase? and If so, what is it we follow for Fact Tables in Db2? Dimensional Modeling and Data Architecture Sat, 31 Oct 2009 04:41:45 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/fact-table-indexing-strategy-t315.htm#1330 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/fact-table-indexing-strategy-t315.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/geospatial-modeling-t328.htm tlfancher Are there any resources I can reference for modeling geospatial data? In our particular case, we are modeling a pipeline as the basic "fact" where the geographic location is of particular importance. In addition we need to model the location of attributes of the pipe (size, material, etc.) as well as location of such items as valves, tees, others. We also need to know attributes of the pipe surroundings: which state, city, does it go through; what is the land use (farm, forest, ... Dimensional Modeling and Data Architecture Mon, 02 Nov 2009 13:09:48 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/geospatial-modeling-t328.htm#1345 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/geospatial-modeling-t328.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/dimension-table-indexing-strategy-t316.htm bi_at_nj
I am looking for dimension tables indexing strategy for Sybase, Oracle and Db2.

If you have any indexing strategy document for Dimension tables for Oracle, sybase and Db2 that would be helpful.

- Thanks in advance,
nj_at_bi]]> Dimensional Modeling and Data Architecture Sat, 31 Oct 2009 04:44:56 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/dimension-table-indexing-strategy-t316.htm#1331 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/dimension-table-indexing-strategy-t316.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/sybase-databases-in-bi-world-t327.htm bi_at_nj
Please specify the pros and cons. (you may compare it with either Oracle or Db2 or in general )

Thanks,
bi_at_nj]]> Dimensional Modeling and Data Architecture Sat, 31 Oct 2009 06:36:39 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/sybase-databases-in-bi-world-t327.htm#1342 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/sybase-databases-in-bi-world-t327.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/version-controlling-your-data-models-t325.htm bi_at_nj
Thanks,
bj_at_nj]]> Dimensional Modeling and Data Architecture Sat, 31 Oct 2009 06:32:29 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/version-controlling-your-data-models-t325.htm#1340 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/version-controlling-your-data-models-t325.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/eacoe-training-t324.htm bi_at_nj
Any comments on eacoe training?

Thanks
bi_at_nj]]> Dimensional Modeling and Data Architecture Sat, 31 Oct 2009 06:30:05 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/eacoe-training-t324.htm#1339 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/eacoe-training-t324.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/database-by-name-kdb-t323.htm bi_at_nj
What are your comments on it ?

What ETL tool are you using with it ? Infa? (using ODBC driver? do they have odbc driver for this? )

Please specify.

Thanks,
bi_at_nj]]> Dimensional Modeling and Data Architecture Sat, 31 Oct 2009 06:28:29 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/database-by-name-kdb-t323.htm#1338 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/database-by-name-kdb-t323.htm http://kimballgroup.forumotion.net/etl-and-data-quality-f9/database-kdb-t322.htm bi_at_nj
If so, do u use informatica with it ?


- Thanks,
bi_at_nj]]> ETL and Data Quality Sat, 31 Oct 2009 06:14:08 GMT http://kimballgroup.forumotion.net/etl-and-data-quality-f9/database-kdb-t322.htm#1337 http://kimballgroup.forumotion.net/etl-and-data-quality-f9/database-kdb-t322.htm http://kimballgroup.forumotion.net/etl-and-data-quality-f9/etl-informatica-32bit-vs-64bit-t321.htm bi_at_nj
If so what kind of problems are you facing in the 64 bit version.

Is there anything you like the most in the 64bit version?

- Thanks in advance,
bi_at_nj]]> ETL and Data Quality Sat, 31 Oct 2009 04:55:58 GMT http://kimballgroup.forumotion.net/etl-and-data-quality-f9/etl-informatica-32bit-vs-64bit-t321.htm#1336 http://kimballgroup.forumotion.net/etl-and-data-quality-f9/etl-informatica-32bit-vs-64bit-t321.htm http://kimballgroup.forumotion.net/etl-and-data-quality-f9/fact-table-loads-t320.htm bi_at_nj Here is a scenario: * Fact table contains 100 million records * Monthly Load of 10million is done at the end of the month to the same fact table In this scenario, how do you handle the indexes in fact table at the time of load? If indexes are made unusable before load, then the rebuild index is time consuming after the load. So, what strategy do you follow in such scenarios? How do we ensure that the data is made available to the users in the shortest possible time. (Assume ... ETL and Data Quality Sat, 31 Oct 2009 04:54:03 GMT http://kimballgroup.forumotion.net/etl-and-data-quality-f9/fact-table-loads-t320.htm#1335 http://kimballgroup.forumotion.net/etl-and-data-quality-f9/fact-table-loads-t320.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/specify-acceptable-snowflaking-scenarios-t319.htm bi_at_nj
- Thanks in advance
bi_at_nj]]> Dimensional Modeling and Data Architecture Sat, 31 Oct 2009 04:49:54 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/specify-acceptable-snowflaking-scenarios-t319.htm#1334 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/specify-acceptable-snowflaking-scenarios-t319.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/sybase-indexes-t317.htm bi_at_nj
What kind of indexes do u use in your warehouse / bi applications in Sybase shop?
Do you follow any indexing strategy in Sybase?

Thanks in advance,
nj_at_bi]]> Dimensional Modeling and Data Architecture Sat, 31 Oct 2009 04:47:06 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/sybase-indexes-t317.htm#1332 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/sybase-indexes-t317.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/many-to-many-relationship-question-t312.htm ekv11 Hi all. I know the common standard practice for many to many relationships is to use a bridge table, and I've done that already in my model. But I've come across a situation where I'm thinking of using a group table related directly with the fact. Let's use the example of an insurance policy for a trucking company. For each policy the company can haul multiple commodities. These commodities are free form entered into the system, along with a percentage of the total time that particular commodity ... Dimensional Modeling and Data Architecture Tue, 27 Oct 2009 22:43:18 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/many-to-many-relationship-question-t312.htm#1319 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/many-to-many-relationship-question-t312.htm http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/many-to-many-relationship-between-dimension-level-t311.htm GBS74 I need help to design dimension model. Detail of Dimension are as following: Dimension : Student, School Fact : Grade 1. Class_Year 2. School 3. Area 4. City Analysis Requirement are to drill up /down by above given hierarchy there is : M:1 relationship between Area and City M:1 relationship between School and Area. Issue : there is M:N relationship between Class_year and School. Every school have class year 6,7 and 8 and vice versa. fact table consist of ... Dimensional Modeling and Data Architecture Mon, 26 Oct 2009 14:51:17 GMT http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/many-to-many-relationship-between-dimension-level-t311.htm#1310 http://kimballgroup.forumotion.net/dimensional-modeling-and-data-architecture-f6/many-to-many-relationship-between-dimension-level-t311.htm