Hi !

Alf 0.15.0, Relational Algebra at your Fingertips, has just been released
to rubygems.org. Alf provides a rich set of features for querying databases
and manipulating data, including:

* `Relation` as a first class data structure for Ruby
* Query SQL databases with a powerful relational algebra
* Query files in standard exchange formats, such as CSV, YAML, or JSON
* Convert data files from one format to the other
* Output query results in those formats as well.
* And a lot more.

This release comes with a fresh new website. There, you can try Alf online
on a typical exemplar from the database literature, read the documentation,
or follow Alf development and underlying ideas on the blog. Respectively:

http://www.try-alf.org/
http://www.try-alf.org/doc/
http://www.try-alf.org/blog/

The source code is open-source (MIT licence) and available on github.
Tickets, issues and contributions are welcome there:

http://github.com/alf-tool/alf

Have a good day!
Bernard