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Define Partial Key and Primary Key
A partial key, also known as discriminator, is the set of attributes which can uniquely identify weak entities that are related to similar owner entity. Primary key is a unique key but not comprise null values. An entity set can comprise at most one primary key.
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
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give some example real-life situations where DBMS are most suiitabe
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These are the binary operations; i.e., each is applied to two relations or sets. These two relations can be union compatible excluding in case of Cartesian product. Two relations R
what do you mean by consistency in rdbms?
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