Quick tutorial on how to view and edit table and column comments with MySQL Workbench.
Quick tutorial on viewing and editing table and column comments in free Oracle SQL Developer.
4 options you have to edit column descriptions in SSMS and 2 for describing tables.
Practical guide on creating ER diagrams with Microsoft SQL Server Management Studio (SSMS).
This tutorial will show you how to generate documentation of your Oracle database with free tool from Oracle – SQL Developer Data Modeler.