View System / Dictionary tables in RDBMS

You can always write custom against the system tables if you need this.

Most SQL like databases implement the SQL COMMENT (SQL Server has extended properties not quite the same). Implementing functionality that can leverage the COMMENT documentation from the database to annotations or tool tips would help novice users to see the "dictionary" to make some better decisions in reporting instead finding people to understand the data. Good method to also encourage documenting of the report contents. https://www.postgresql.org/docs/9.5/static/sql-comment.html https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_4009.htm