How to improve session performance in aggregator transformation?
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Explain what is a three tier data warehouse?
Which component has onread method and what it is used for?
How to handle time period attribute for time dependent data?? a.)add time period as a part of pk b.)add time period simply and make it nullablec.)add time period simply and make it not null.
Explain what is type 2 version dimension?
Name a few sectors which use data warehousing?
Which columns go to the fact table and which columns go the dimension table?
What is factless fact schema?
What is partitioning? What are the types of partitioning?
Why facts table is useful in representing the data?
Explain what are the vaious etl tools in the market?
How can you implement many relations in star schema model?
How can we transform row to column?