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Which database object does not physically exist?
A view database object does not physically exist.
Hi is anyone well versed in accounting information systems available now to help me work through an important assignment due tomorrow at noon?
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
What are domain constraints? A domain is a set of values that might be assigned to an attribute .all values that appear in a column of a relation must be taken from the similar
design a generalization specialization hierarchy for a motor vehicle sales company. the company sells motorcycles, passenger cars, vens and buses.
Difference between Operating System and Database Security Security within the operating system can be executed at various levels ranging from passwords for access to system, t
What is data definition language? Explain it in detail? The SQL DDL allows specification of not only a set of relations, but also information after each relation, containing
losers with new information systems
Define an abstraction by which relationships are treated as higher level entities Ans: Aggregation. It is an abstraction by which relationships are treated as higher level
gyan gurukul is a software company that provides software related solution.
What is meant by log-based recovery? The most widely used structures for recording database changes is the log. The log is a sequence of log records, recording all the update a
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