Alf is a modern, powerful implementation of relational algebra. It brings relational algebra where you don’t necessarily expect it: in shell, in scripting and for building complex software. Alf has an rich set of features. Among them, it allows you to:

Query .json, .csv, .yaml files and convert from one format to the other with ease,
Query SQL databases with a sounder and more powerful query language than SQL itself,
Export structured and so-called “semi-structured” qu…