List questions from relation-algebra | MathQA

Relations as arrows and as objects - what are the arrows in the latter?

Published on 14 Apr 2026 - 12:28

Suggested resources for self-teaching relational algebra/calculus

Published on 13 Apr 2026 - 18:03

How to tell which of these two relational-algebra expression is more effective?

Published on 25 Mar 2026 - 14:26

Proving that Selection Operator on Cartesian Product of Two Relations is Equivalent to Theta-Join on Those Same Realtions

Published on 11 Apr 2026 - 8:25

Questions on the dual of the composition $R;S$ of binary relations.

Published on 25 Mar 2026 - 14:26

How can I use relational algebra to determine when changes to a relation invalidate the results of an expression?

Published on 25 Mar 2026 - 12:54

Is there way to rewrite natural join of two matrices filled with numbers in terms of ordinary calculus and linear algebra notation

Published on 25 Mar 2026 - 12:49

Relational algebra question

Published on 10 May 2026 - 15:41

Cardinality of natural join and left join

Published on 25 Mar 2026 - 14:22

Cartesian Product and division in relational algebra

Published on 09 Apr 2026 - 4:23

Relational Algebra: set theoretic definitions for typical operations?

Published on 25 Mar 2026 - 16:06

EER model or relational model for second order logic statements

Published on 25 Mar 2026 - 12:46