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Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
While using extract datasets it is required to have a special workarea for interface False. It is not required to have a special workarea for interface
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
Define- relational algebra. The relational algebra is a procedural query language. It having of a set of operations that take one or two relation as input and make a new relati
Which is a valid SQL type? A valid SQL Should be in CHARACTER it is should be NUMERIC and FLOAT.
aggregation
Describe multi key files
What is equi join? Equi Join - It generates all the combinations of tuples from two relations which satisfy a join condition along with only equality comparison (=).
Explain the term High level DML? High level DML A high-level or non-procedural DML permit the user to specify what data is needed without specifying how it is to be acquired.
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