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What are temporary tables?
Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
Three way to handle missing field val
Attribute Preservation This is a easy and obvious necessity that includes preserving all the attributes that were there in the relation that is being decomposed.
triggering
Benefits of using heuristics
What is transaction? Collections of operations that form a single logical unit of work are known as transactions.
The Database Approach In order to overcome the limits of a file system, a new approach was needed. Hence a database approach emerged. A database is a persistent collection of
Database Manager It is the interface among low-level data, queries and application programs. Databases typically need a large amount of storage space. It is kept on disks, as
There are three main sources of utilities and applications for a DBMS: a. Vendor applications and utilities are given for working with or maintaining the database, and generally
how to construct labelled precedence graph for view serialiability.please explain insteps with one solved examples
what is er digram given that example of hospital,bank and library er digram.
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