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What is Relational Algebra?

Posted By :Shashi Ray     Posted Date :October 24, 2008    Points :10   Category :Sql Server 
It is procedural query language. It consists of a set of operations that take one or two relations as input and produce a new relation.

You can also find related Interview Question to What is Relational Algebra?  below: 

How is the data structure of System R different from the relational structure?

  
Unlike Relational systems in System R
1.Domains are not supported
2.Enforcement of candidate key uniqueness is optional
3.Enforcement of entity integrity is optional
4.Referential integrity is not enforced (More...)

What Are The Properties Of The Relational Tables?

  
Relational tables have six properties:
· Values are atomic.
· Column values are of the same kind.
· Each row is unique.
· The sequence of columns is insignificant.
· The sequence of rows is insignificant.
· Each column must have a unique name. (More...)

What are the properties of relational tables?

  
.Values are atomic
.Column values are of same kind
.Column sequence is insignificant
.Row sequence is insignificant
.Each column is unique
.each row is unique (More...)

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