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What is trigger?
Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
what problems are raised by the database? why is it so controversial? why is data quality an issue?
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In an E-R diagram an entity set is represent by? In an E-R digram entity set is represted by rectangle.
The participation Constraints shows whether the existence of an entity depends on its being associated to another entity by the relationship type. There are two kinds of participat
QUESTION (a) Consider a car database consisting of car model, car make, car origin, Engine capacity, color, cost.
Question 1: (a) Explain the legal meaning of :- (i) Computer Service Person (ii) Data holding (b) Explain how the law ensures Data protection and Security. Qu
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
What are uncommitted modifications? The immediate-modification technique permits database modifications to be output to the database whereas the transaction is still in the act
What is a checkpoint? List the operations to be performed by the system when a checkpoint is to be taken. What does the recovery system do if there is a crash? There is large n
Which language used in application programs to request data from the DBMS is referred? Language which is used in application program is DML to request data from the DBMS is ref
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