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Explain the Deferred Update The deferred update methods do not physically update the database on disk till after a transaction reaches its commit point; after that the updates
What is relational model feature? A relational model feature is much more data independence than some other database models.
A set of possible data values is called? A set of possible data values is called as domain.
(a) Design a query plan for the following distributed query: An application at site B wants to compute a join of STUDENT ? Id=StudId TRANSCRIPT where STUDENT (Id,Major) is at site
ddlc
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
i want to database for online assignment submission system
The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
Define check point and its impact on data base recovery. Ans: There could be hundreds of transactions handled per minute, in a large on-line database system.
what do you understand by enhanced entity-relationship
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