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What is foreign key?
Foreign Key - Let there are two relations in tables R and S. Any candidate key of the relation R that is referred in the relation S is known as the foreign key in the relation S and referenced key within the relation R. The relation R is also known as parent table and relation S is also known as child table.
what is difference between circular inked lust and grunded linked list
Fourth Normal Form (4NF) When attributes in a relation have multi-valued dependency, further Normalization to 4NF and 5NF are needed. Let us first find out what multi-valued d
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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The users who use easy-to-use menu are called ? The users who use easy to use menu are called as Naïve users.
Explain the Relational Completeness Codd described the term relational completeness to consider to a language that is complete with respect to first-order predicate calculus ex
what is multivalued dependency
Define the terms i) Entity set ii) Relationship set Entity set: The set of all entities of the similar type is termed as an entity set. Relationship set: The set of all rela
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What is OMR? OMR (Optical Mark Recognition) is the translation of marks - or the absence of marks - but not the shape of the mark on forms that have small circles ("also called
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