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To delete a particular column in a relation which command is used ? To delete a particular column in a relation ALTER command is used.
Define canonical cover? A canonical cover Fc for F is a set of dependencies like F logically implies all dependencies in FC and Fc logically shows all dependencies in F.
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
explain normalisation
example of bank
Explain the two types of participation constraint. Total: The participation of an entity set E in a relationship set R is said to be total if each entity in E participates i
We will explain here an example database application having COLLEGE database and use it in showing several E-R modelling concepts. College database remains track of faculty, Stu
What are audit trails? An audit trail is a log of all alters to the database along with information like which user performed the change and when the alter was performed.
i want to database for online assignment submission system
#question. acompani datdbase needs to store information about employees (identified by a social security number,with salary and phone as attributes) and departments (identified by
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