What is dimensional modelling?
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What are the key columns in Fact and dimension tables?
4.Explain Snowflkeschema ?
6 Answers EDS, HCL, IBM, iFlex, TCS,
Advantages of de normalized data?
What is drill-through?
Explain how does tuple-oriented relational calculus differ from domain-oriented relational calculus?
Explain what are data marts?
how do you use commit frequencies? how does it affect loading performance?
What is a Data Cube?
What is source qualifier?
Is framework manager an un-needed overhead? As we know report studio allows us to create the data model from a query and thereby skipping framework manager. Given that this feature is available, in what scenarios would one want to skip framework manager?
What is meant by metadata in context of a data warehouse and how it is important?
Explain which are the olap tools available that are supported by oracle?