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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
The Maximum no of key fields that can be used in a header is?? 50
What is deadlock? Neither of the transaction can ever proceed with its normal implementation. This situation is known as deadlock.
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
examples of fields in a database
Write short notes on domain relational calculus The domain relational calculus uses domain variables that take on values from an attribute domain rather than values for whole t
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
Explain Superkey Ans: A superkey is described in the relational model of database organization like a set of attributes of a relation variable for which it holds that in all re
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
You are required to program (in a high level language such as C, C++, Java) and implement a cache simulator which will have the following inputs and outputs:- INPUTS
what is lossless & dependency preserving decomposition ?
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