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Relational Algebra DBMS
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Which is a join condition contains an equality operator
Cartesian
left
Natural
Equijoins
For select operation the ________ appear in the subscript and the ___________ argument appears in the paranthesis after the sigma
Predicates, relation
Operation, Predicates
Relation, Operation
Relation, Predicates
The ___________ operation, denoted by -, allows us to find tuples that are in one relation but are not in another
difference
union
Set-difference
Intersection
Which is a unary operation
Generalized selection
Primitive operation
Selection operation
Projection operation
Which of the following is not outer join
Left outer join
All of the mentioned
Right outer join
Full outer join
Which of the following is a fundamental operation in relational algebra
none of the mentioned
assignment
Set intersection
Natural join
Which of the following is used to denote the selection operation in relational algebra
Pi (Greek)
Sigma (Greek)
Lambda (Greek)
Omega (Greek)
In precedence of set operators the expression is evaluated from
Left to left
Right to left
Left to right
From user specification
Relational Algebra is a __________ query language that takes two relation as input and produces another relation as output of the query
Structural
Relational
Fundamental
Procedural
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