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what is entity in database system?
Explain the Strategy of Database Planning ?
Explain heap file with advantages? Heap File is an unordered set or a group of records, stored on a set of pages. This class gives basic support for inserting, updating, select
What are the time stamps associated with each data item? W-timestamp (Q) denotes the largest time stamp if any transaction that implemented WRITE (Q) successfully. R-timesta
What are the typical phases of query processing
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
What are the several kinds of the update operations on relations? Also explain the constraints on these update operation. Give instance in support of your answer. There are th
What is candidate key? Candidate Key - A candidate key of an entity set is a minimal superkey, which uniquely identifies each row in the relation.
Explain in details about the f unctions of DBA ?
what factors might influence a company to outsource its IT infrascture.
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