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Write a query to define tables students and teachers as sub tables of people? Create table students of student under people Create table teachers of teacher under people
What do you mean by atomicity and aggregation? Atomicity : Either all actions are carried out or none are. Users should not have to worry about the effect of incomplete trans
What are the two types of indices? The two types of indices are:- A) Dense index B) Sparse index
A set of possible data values is called? A set of possible data values is called as domain.
These are designed to reduce the effects of a database failure and make sure a database is restored to a consistent state if a failure does arise. Manual backup/restore utilities n
Optimistic Concurrency Control Is locking the only way to stop concurrency related problems? There exist some other ways too. One such way is known as an Optimistic Concurrency
Give some encryption techniques? A) DES B) AES C) Public key encryption
differences between a classified catalog and a dictionary catalog
Adding Redundant Associations for Efficient Access The expression redundant association means using "duplicate association for proficient access". While analysis, it is not a
Which database level is closest to the users? External database level is closest to the users.
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