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Which database level is closest to the users?
External database level is closest to the users.
sir, could anybody help me in getting complete information about the mentioned topic
Explain the EXISTS and UNIQUE functions of SQL. Give an example for each? EXISTS: The EXISTS function takes one parameter that is a SQL statement. If any records exist which
Explain Clustering file organization (i) Determine if a record of file is physically ordered on a nonkey field - that does not comprise a different value for each record - that
management information system based on functional organisation
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Give the two reasons for allowing concurrency
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