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Define blocks?
The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
explain normalisation
Why are cursors necessary in embedded SQL? A cursor is an object used to store the output of a query for row-by-row processing through the application programs. SQL statements
What are the causes of bucket overflow in a hash file organization? What can be done to reduce the occurrence of bucket overflow? When a record is inserted, the bucket to that
usecase diagram,activity diagraM,SEQUENCE DIAGRAM
ERD Diagram of Medical Recruitment Agency?
What are the typical phases of query processing
What Command You Use What Day of the week were you born
How does the two phase protocol ensure serializability in database schedules? Ans: A transaction is termed to follow the two-phase locking protocol if all locking operations
Define Assertions in SQL a. An assertion is a predicate that is expressing a condition we wish the database to always satisfy. b. Domain constraints, functional dependency
Sparse and Dense Indexes These indexes in principle are the similar as that of indexes used at the back of the book. The key facts of the indexes are: They are arranged
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