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The main operations of relational algebra are

1. The select Operation

2. The projection operation

3. The union operation

4.The set different operations

5.The Cartesian-product operation.

6.The rename operation.

7.Additional operations.

8.The Set-Intersection operations.

9.Natural-join operations.

10.Division operation.

11.The Assignment operation.

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Q: What are the main operations of relational algebra?

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This is called algebra. In algebra you can have many operations. You can add, subtract, multiply, divide, square, cube, square root, factor, or distribute. There are others but these are the main ones. You use these operations to find the numerical value of the variable.

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Boolean algebra is a division of mathematics that deals with operations on logical values and incorporates binary variables.

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The nnary and Binary operators in relational Algebra.

Two main types: Relational Calculus based Language Relational Algebra based Language. These languages provide similar set of operations but with different syntax. Calculus based is more kind of procedural and near to English, while Algebra based uses a set of symbols for queries.

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What is the utility of relational algebra relational calculas name some software's based on these concept?"

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Which relational algebra operators can be applied to a pair of tables that are not union compatible

Which relational algebra operators can be applied to a pair of tables that are not union compatible

This is a big question. I you enter 'relational algebra' in a search engine, you will find many sites which go over this. Wikipedia usually takes a very high level abstract approach. The link below seems fairly easy to understand.

CHUT

The syntax of a query in relational algebra essentially describes the query evaluation algorithm i.e. SELECT WHERE FROM --------------- I don't agree with the above answer. Notice that 'SELECT WHERE FROM' is fragmentary SQL. It does not describe an algorithm, or procedure, for obtaining the desired results. Rather, it describes the characteristics of the desired results and where they might be obtained. In fact, relational algebra is not inherently procedural. It involves closed collections of objects called relations and a set of permitted operations on these objects. Please see the link.

operations of sets in algebra

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