What is the use of incremental aggregation? Explain me in brief with an example?
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explain about balanced dimension,
Which technology should be used for interactive data querying across multiple dimensions for a decision making for a dw?
How many clustered indexes can you create for a table in dwh? In case of truncate and delete command what happens to table, which has unique id.
What are the possible data marts in retail sales?
The same tier?
What is the difference between Oracle Express and Oracle Discoverer?
what is the synchonus? wht is the diff between synchronous and asynchronous what is the diff between v1 and v2 v3 delta modes in sap ecc
How many types of facts and what are they?
Where the data cube technology is used?
What are the differences between datamart vs. Reporting cube?
Explain what is ods (operation data source)?
what are the similarities between ROLAP and MOLAP