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What is NULL? Give an example to described testing for NULL in SQL? The NULL SQL keyword is used to represent either a missing value or a value which is not applicable in a re
what is object-identity
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
#floating point representation is used to store
explain various steps uses in evaluation and maintenance of MIS.
Explain the disadvantages of file oriented approach? In the oriented approach Applications are designed in isolation. Design of application is optimized for one application. In
Explain Candidate Key and Super Key A super key is a set of one or more than attributes that, taken collectively, permits us to identify uniquely a tuple in the relation. Wher
explain the steps for reduction of er model into relational model?
what is cascading rollback
What are the difference between clustered and a non-clustered index? A clustered index is a special type of index that reorders the way records in the table are physically stor
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