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What are the technique to define a schema completely ?
A schema is completely define by DDL and DML query language.
what benefit can a company gain by managing its own infrasture and services
Have database built but having problems with some questions that go with the database
What is a B+-Tree index? A B+-Tree index takes the form of a balanced tree in which each path from the root of the root of the root of the tree to a leaf of the tree is of the
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
What is inheritance? Define it in detail? Inheritance Inheritance can be at the levels of types, or at the level of tables we first consider inheritance of types, then i
explain participation constraints with examples
List the Armstrong's axioms for functional dependencies. What do you understand by soundness and completeness of these axioms? Ans: The Armstrong's axioms are: F1:
We define a view in SQL through using the create view command. To describe a view, we must provide the view a name and must state the query in which computers the view. The form of
In a Hierarchical model of data records are organized ? In the hierarchical model of data records are organized as Tree structure.
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