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Describe how you can simplify Operations.
To simplify operation, one should use inheritance, where possible to use, to reduce the quantity of distinct operations. Introduce new superclasses as required to simplify the operations, but they must not be forced or unnatural. Locate each operation at correct level in the class hierarchy.
What are the advantages of creating a table from existing table?
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what is meant semantic query optimization? how does it differ from other query optimization techniques?
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What is the full form of DDL? DDL is stand for Data Definition Language.
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explain the steps for reduction of er model into relational model?
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