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I am looking for a program that deals with relational algebra on relations and relationships.

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Can you provide some examples of software that fits your description for other platforms? – gertvdijk Sep 17 '12 at 23:06
up vote 4 down vote accepted

Here's a link to "relational", which is a GUI-based relational algebra application. According to the site, it is an "educational tool" so I'm not sure if it's exactly what you're looking for or not.

You should be able to install it by running the following command from a terminal session:

sudo apt-get install relational
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Maybe Sage has some capabilities that would be useful to you? It's a multi-purpose CAS. If not, here is a thick report on Relational Algebra that I couldn't make heads or tails of---not even to figure out where the software that the author is talking about is available.

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