This section provides configuration options that affect the Modeling functionality in MySQL Workbench.
Use the When Deleting Physical Model Figures in
Diagram frame to determine the behavior when deleting
objects from the EER diagram canvas. Choose Ask
and whenever you delete an object you will be asked whether you
wish to remove the object from an EER diagram only or also from
the catalog. The Keep Database Object in
Catalog is the safest option. You also have the option
of deleting the object from both the EER diagram and the catalog.
If you choose the Ask option a confirmation
dialog box will only open when you are deleting an object from
an EER Diagram. When deleting in the MySQL Model view there is
no confirmation dialog window
and the delete action always removes the object from the
catalog.
There are a variety of ways of deleting an object from an EER
canvas; using the eraser tool, choosing a
pop-up menu option, using the delete key, and by choosing the
delete option under the menu. In each
case, the action performed by the delete key is determined by the
option chosen from the When Deleting Physical Model
Figures in Diagram frame.
Use the model tab to set the default value for various object names and the primary key data type. A listing of those items with their default values follows:
Primary Key Column Name: id%table%
Primary Key Column Type: INT
Column Name: %table%col
Column Type: VARCHAR(45)
Foreign Key Name: fk%stable_%dtable%
Foreign Key Column Name: %table%_%column%
ON UPDATE: NO ACTION
ON DELETE: NO ACTION
Associative Table Name: %stable%_has_%dtable%
The Primary Key Column Name is the default
primary key column name when using the table editor. Likewise with
the default primary key data type, and column name and column
type. The remaining items are the default names used when using
the relationship tools on an EER diagram.
Items enclosed by percentage signs are variables. Their meanings are as follows:
%table%: The table associated with the object%column%: The column associated with the object%stable%: The source table%dtable%: The destination table
Legitimate values for the foreign key delete or update rules are:
RESTRICTCASCADESET NULLNO ACTION(default)
For more information about these actions see Section 16.6.7.1.3.5, “The Foreign Keys Tab”.