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Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
Lossless-Join Decomposition Let us show an intuitive decomposition of a relation. We require a better basis for deciding decompositions since intuition may not always be r
Suppose an instruction takes 1 nanosecond to execute (on average), a page fault takes 20 microseconds of processor time, and it takes 300 microseconds of disk time to read or write
Describe the Association: Design Before we describe association design let us define association "Association is set of links between two objects in the object model". It is
Define deadlock prevention. Deadlock prevention is a set of methods for ensuring that at least one of the four essential conditions like mutual exclusion, hold and wait, no pre
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
Compare wait-die deadlock prevention scheme with wait-wound scheme Ans: Wait-Die Scheme a) Based upon a nonpreemptive technique. b) If Pi requests a resource present
About Attribute inheritance
Which operation is used if we are interested in only certain columns of a table? PROJECTION operation is used if we are interested in only certain columns of a table.
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