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Hopefully improved the README

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It was a bit aggressive, had a typo
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Salvo 'LtWorf' Tomaselli 2016-01-01 12:35:12 +01:00
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README.md
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Relational an educational tool to provide a workspace for experimenting with *relational* *algebra*, an offshoot of first-order logic. Relational an educational tool to provide a workspace for experimenting with *relational* *algebra*, an offshoot of first-order logic.
It provides GUI that can be used for executing relational queries, and also provides a command line interface. It works on GNU/Linux, Windows and OS X.
It provides:
* A GUI that can be used for executing relational queries
* A standalone Python module that can be used for executing relational queries, parsing relational expressions and optimizing them
* A command line interface
Provides a standalone Python module that can be used for executing relational queries, parsing relational expressions and optimizing them.
Official website Official website
================ ================
@ -20,7 +24,6 @@ For Linux, check your distribution's packages, relational is available on Debian
Syntax Syntax
====== ======
These are some valid queries These are some valid queries
``` ```
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Q ⋈ π a,b(A) ⋈ B Q ⋈ π a,b(A) ⋈ B
ρid➡i,name➡n(A) - π a,b(π a,b(A)) ∩ σage > 25 or rank = weight(A) ρid➡i,name➡n(A) - π a,b(π a,b(A)) ∩ σage > 25 or rank = weight(A)
π a,b(π a,b(A)) π a,b(π a,b(A))
ρid➡i,name➡n(π a,b(A)) ρ id➡i,name➡n(π a,b(A))
A ⋈ B A ⋈ B
``` ```
@ -54,13 +57,18 @@ To launch the application, run
./relational_gui.py ./relational_gui.py
``` ```
Running on osx or
==============
You can probably follow the instructions on running from sources to ```
rut on osx. python3 relational_gui.py
```
If you encounter problems, don't ask me for help. Running on OS X
===============
You can follow the instructions on running from sources to
run on OS X.
If you encounter problems, don't ask me for help. I don't have an Apple.
If you encounter problems and overcome them, please tell me how to update this If you encounter problems and overcome them, please tell me how to update this
README. README.