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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 need the user to initiate the backup, whereas automatic utilities will back up the database at regular intervals without any intervention from the user. Proper use of a backup/restore utility permits a DBMS to recover from a system failure reliably and correctly.
Define Deadlock detection If a system does not employ a few protocols that make sure deadlock freedom, after that a detection and recovery scheme should be used. An algorithm
Foreign Keys and NULL Let us take the relation: DEPT DEPT ID DNAME BUDGET D1 M
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
how does Btree differ from a B+ - tree?
What is transaction? Transaction is a unit of program implementation that accesses and possibly updated several data items.
how to construct labelled precedence graph for view serialiability.please explain insteps with one solved examples
Problem 1. Describe the following a) Advantages of Database Systems b) Functions of a DBMS Explanation of part (a) and (b) 2. Explain the following concepts w
Different stages of DDLC ?
Write an sql statement to find what is the percentage of home policies which are from the state of Arizona out of all Home policies by Policy Value.
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
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