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Define the term Domain.
For each n every attribute there is a set of permitted values known as the domain of that attribute.
How nulls are treated in comparison operator? Along with comparison (relational) operators, the null values are ignored as we cannot derive the relation along with the given op
Define functional and multivalued dependencies. Ans: A functional dependency is a assets of the semantics of the attributes in a relation. The semantics point out how at
What is catalog in DBMS? Catalog - A relational DBMS maintains information about every table and index in which it contains. A catalog is a collection of special tables that st
imagery
Give an example of operations from the State Actions and Activities. For instance, in bank the activity verify account code and verify password
explain external view
Give the forms of triggers? The triggering event can be insert or delete. For updated the trigger can state columns. The referencing old row as clause The referencing
Sequences Sequences: Automatically produce unique numbers Are sharable Are typically used to make a primary key value Replace application code Speed up t
Explain the Strategy of Database Planning ?
Whst is logical schema ? Logical schema is the entire database.
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