Ingesting a SQL Schema to create an Algebraic Theory

We can represent relational database schemas as free categories with catlab, but we should support the automatic creation of the indexing category from a SQL schema. I think there are commands you can issue to a PGSQL server which will return a table containing all the information about the tables and indexes. We could compute the indexing category of a C-Set from that information and automatically populate a PGSQL database into a C-Set. Similar functionality exists in SQLite databases.