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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
Construct an ER diagram for a hospital along with a set of patients and a set of medical doctors Associate with every patient a log of the several tests and examinations conducted.
What does authentication refer? Authentication refers to the task of verifying the uniqueness of a person.
What is foreign key? A relation schema r1 derived from an ER schema may contain among its attributes the primary key of another relation schema r2.this attribute is known as a
What is hashing file organization? In the hashing file organization, a hash function is computed on some attribute of every record. The result of the hash function specify in
Control as State within Program 1. The term control exactly means to check effect of input within a program. For illustration, in Figure, after the ATM card is inserted (a
job scheduling for different cubes
What is transaction? Transaction is a unit of program implementation that accesses and possibly updated several data items.
ER diagram on cosmetics
normal forms
entity relationship diagram about finance
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