What do the workbench column icons for mysql mean in ER chart?

Question

Can someone help me explain the icons in the ER diagram of a database created in MySQL Workbench.

• Blue diamond (filled);
• Blue diamond (unfilled);
• Red diamond etc.
  
  Thank!

Answer 1

I found these resources on the MySQL website:

• http://dev.mysql.com/doc/workbench/en/wb-using-table-tool.html
• http://dev.mysql.com/doc/workbench/en/wb-table-editor.html

, , . , NN.

.

:

• Blue Diamond (Filled) = NOT NULL
• Blue Diamond () = NULL
• Red Diamond, et cetera = {fill: NOT NULL, unilled: NULL}