The Entity Relationship Diagrammer shows the tables and their relationships to each other systematically, following the IDEF1X standard. ER Diagrammer can create an entity-relationship diagram from an existing database. Optionally, for a complex database, ER Diagrammer can generate diagrams for portions that you select. Usually, the result will picture the tables in a manner that clearly shows all relationships.

If you prefer, you can rearrange the tables differently, and the connectors will follow along. The graphic can then be saved in a file for future display. You can also use ER Diagrammer in conjunction with Hora, another member of the KeepTool 5 family, to generate a data model for a new database. Simply use Hora to define tables--adding, dropping and renaming columns where necessary; then use ER Diagrammer to create a graphic view of your data model.