EmacSQL is a high-level Emacs Lisp front-end for SQLite. PostgreSQL and MySQL are also supported, but use of these connectors is not recommended. Any readable lisp value can be stored as a value in EmacSQL, including numbers, strings, symbols, lists, vectors, and closures. EmacSQL has no concept of TEXT values; it's all just lisp objects. The lisp object `nil' corresponds 1:1 with NULL in the database. See README.md for much more complete documentation.