Structured Query Language

SQL is a standard language for databases, and we provide a format for creating tables and inserting data. Different than with CSV, there can be multiple tables, so as to avoid duplication of elements.

Duplication is avoided by separation of tables. An internal id field is created, and looked up before duplication would create another entry with the same data, which is usually possible with a CREATE IF NOT EXISTS command. In other statements, it is then possible to SELECT that particular entry, be it new or not, and use it in any number of rows as a foreign key in an INSERT statement.

TODO: Details.