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Ad hoc Meta Model. Topic Modeling Challenges for Warehouse & OLTP Various techniques for achieving efficient model Model intuitiveness and usability Formulating.

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Presentation on theme: "Ad hoc Meta Model. Topic Modeling Challenges for Warehouse & OLTP Various techniques for achieving efficient model Model intuitiveness and usability Formulating."— Presentation transcript:

1 Ad hoc Meta Model

2 Topic Modeling Challenges for Warehouse & OLTP Various techniques for achieving efficient model Model intuitiveness and usability Formulating QA testing strategy Blunders

3 Modeling Challenges for Warehouse & OLTP Achieving one model across various DBs like DB2,Oracle &Sqlserver…etc Multi Language Multi grained facts Knowing atomic Data

4 Modeling Challenges for Warehouse & OLTP..Cont Ensuring efficient Query formation and complete understanding of SQL generation Engine Handling One-to-many & Many-to-many Bridges & Outriggers Rollup Behaviors of measures

5 Various techniques for achieving efficient model Single fact model Collapsing joins using views Applying various indexing techniques

6 Model intuitiveness and usability Mapping model to business process Folder structure & UI Not to Over crowd the model Creating sample grain reports of the model Proactively reviewing the model UI every 6 months

7 Formulating QA testing strategy Checking ETL audit reports Check Grains report Comparing Sql queries with previous version Creating test report which compares source & warehouse data

8 Blunders Creating a complex canned report with various prompts/numerous columns and using as Ad hoc tool Gathering Model requirements based on canned reports instead of business process Providing too many canned reports will kill Ad Hoc tool usage

9 Q&A Ajay Patwari


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