A Database design and entity relationship diagram (ERD) tool for Mac OS X. SQLEditor replaces typing SQL by hand with dragging, dropping and clicking. SQLEditor For Mac OS X is a program to help you work with databases. Relational databases are the main type of database that SQLEditor supports, however other types can also be used. SQLEditor allows you to create, import, view, edit and export database structures. You can use it to create diagrams of databases showing the logical layout of objects within the database.