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Showing posts with the label Relational Algebra
Equivalent Of Groupby And Having Clause In Relational Algebra

Equivalent Of Groupby And Having Clause In Relational Algebra

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I was doing an assignment where I had to convert SQL queries into Relational Algebra queries. I got… Read more Equivalent Of Groupby And Having Clause In Relational Algebra
Relational Algebra Check For Error

Relational Algebra Check For Error

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Hi could someone please verify my work. Im not sure if im doing any of this correctly and would gre… Read more Relational Algebra Check For Error
How To List Each Pair Of Tuple Only Once Irrespective Of Column Order In Sql And Relational Algebra?

How To List Each Pair Of Tuple Only Once Irrespective Of Column Order In Sql And Relational Algebra?

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I'm working on some book exercises and can't find an explanation on how to express the foll… Read more How To List Each Pair Of Tuple Only Once Irrespective Of Column Order In Sql And Relational Algebra?
Is Left Join Commutative? What Are Its Properties?

Is Left Join Commutative? What Are Its Properties?

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Assume tables TableA TableB TableC and TableD: Is the following query: TableA INNER JOIN TableB LEF… Read more Is Left Join Commutative? What Are Its Properties?
Date In Sql And Relation Algebra Is Null?

Date In Sql And Relation Algebra Is Null?

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I have a questions is it possible to set a date in tables NULL(in my case that a shipdate does not … Read more Date In Sql And Relation Algebra Is Null?