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Lock Based Protocol
A lock is nothing but a mechanism that tells the DBMS whether a particular data item is being used by any transaction for read/write purpose. As there are two types of operations, i.e. read and write, whose basic nature are dissimilar, the locks for read and write operation might be behave differently.
Read operation performed by dissimilar transactions on the same data item poses less of a challenge. The value of the data item, if constant, can be read by any number of transactions at any given time.
example of embedded SQL query
While sorting field groups we cannot use more than one key field False.
What is average response time? The average response time is that the average time for a transaction to be done after it has been submitted.
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Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
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