A database system optimised for reporting, particularly in aggregate. Often, but not always implemented using a star schema.

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How to ensure on Oracle RAC One Node that the OWB control service is started on the active node after a planned relocate or unexpected fail-over? [duplicate]

I followed the document 'How To Install a Warehouse Builder 11g Repository on a RAC' (Doc ID 1571166.1) to set up the OWB repository (11.2.0.4) on my Oracle RAC One Node system. Because it's a RAC One ...
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Does data guard support Oracle Warehouse Builder?

Does data guard support Oracle Warehouse Builder (both 11.2.0.4)? If not, what is the procedure to setup/configure my OWB project (repository, workspace, control center service...) on the standby ...
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When there is a Type 1 and type 2 SCD in a dimension table, how are updates to the type 1 column handled after the type 2 column is updated?

Eg: ID Type1SCD Type2SCD FromDate todate 1000 100 ABC 01-JUL-2014 NULL Now, Type2SCD is updated ID Type1SCD Type2SCD FromDate todate 1000 100 ABC 01-JUL-2014 12-JUL-2014 ...
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111 views

apply cdc to existing data warehouse

I'm building an education data warehouse. I have various dimensions that i would like to track changes to i.e. DimStudent, DimClass, DimCollege, DimExamPaper etc. etc. My solution currently drops ...
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84 views

Is there better way to design SQL tables

I need to design a quick application for small warehouse. I just want to check if there is a better design approach. I am using polymorphic associations for comments tables. Business Rules If ...
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108 views

How much RAM do I need?

Let's assume a query like the following as typical: select A.`date` as `date`, count(*) as N from A as A join B as B on B.id = A.b_id join C as C on C.id = B.c_id join D as D on D.id = ...
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2answers
156 views

Daily snapshot fact table

I have a list of products per costumer. Costumers can delete or add products to their list. I want to know in each day what is the list of products (and count) by costumer. My first approach is to ...
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1answer
180 views

SQL Server 2012 for data warehouse [closed]

I have to develop a data warehouse using SQL Server 2012. I'm confused about the release I could use... Standard or Enterprise? The database server will have 16 or 32 GB of RAM and a Quad-Core CPU. ...
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170 views

how to being building a data warehouse [closed]

We have a ERP system that uses a DB in postgres, each table has many rows and we want to build data warehouse (data warehousing). Also we want to add BI using ETL where would begin? would use schemes ...
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3answers
235 views

Business Intelligence = Technical OR Business Project? [closed]

Do you consider a project of Business Intelligence to be a technical or business project?