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Describe the nested-loop join and block-nested loop join. Ans: The block nested- loop join algorithm is as described below: for every block B r of relation R do beg
Natural Join : It is the similar like Equi join except one of the duplicate columns is removed in the result table. The natural join is the most usually used form of join operation
What is entity in DBMS? Entity: A DBMS entity is either a thing in the modelled world or a drawing element in an ERD.
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
What are the purpose for having variable length records? What kinds of separator characters are required for each? Variable-Length Records - Variable-length records are thos
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case study
What does Aggregation mean?
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