So finally I had the chance to see a Paul Klint's presentation about Rscript.
For those outside the scope this is a good time to run away... on other hand, maybe you're interested in code query technologies and then it may be interesting for you to know that Rscript is a code query tool that offers a query language based on relational algebra...
The presentation was really interesting although I found very interesting that Paul only used examples written with set comprehension and avoided examples in relational algebra. This interests me because although relational algebra is not Turing complete, you can achieve much more concise expressions than those written in set comprehension. The cons of relational algebra is that you can get totally unreadable expressions quite fast... Allowing both relational algebra and set comprehension's can allow an excellent balance between conciseness and readability... but more of this later...
