TrueBase Query Language (TQL) is a language for querying TrueBases.
TQL powers the search on PLDB.com. Here is an example query to show all query languages in the PLDB.
SQL is designed for querying binary databases storied in various binary formats. TQL is designed for querying plain text databases stored in Tree Notation format. SQL is a plain text language for querying binary databases. TQL is a plain text language for querying plain text databases.