|Previous Top Next|
Base Tables, usually called Tables, can be created, altered and dropped from the Table Editor. Besides the table object, you can also insert, edit and delete table data in this editor.
If your database system supports Domains (User Defined Datatypes) or Object Types, these will be available in the Column Type drop down box. You can create a Domain or Object Type while editing a table and it will show up in the list of available types for the column.
Below is an example, taken from the Firebird Table Editor:
The Firebird Table Editor
As you can see in the above example, tables can have additional options at an Options tab. For example, the primary key constraint name is available on that tab if you select any columns to be included in the primary key constraint. By default, the name is defined by a Name Template.
You cannot drop a primary key or remove columns from the primary key in this editor. To do this, use the Constraint Editor.
If your database engine supports it, a Column Description box let's you edit a user-written column description. You can turn this box on/off by the button in the toolbar.
You can add and drop columns by using the Add Column or Delete Column buttons. If a column is already part of the table in the database, you will get a warning saying the column isn't new and Database Workbench will ask for a confirmation.
As long as a column is new (not saved to the database yet), you can edit all properties - if it's an existing column, what you can edit depends on the database engine capabilities to modify existing columns.
If the table is still new (not saved to the database yet) or if the database engine supports moving column positions in a table, you can move columns up and down with the arrows in them.
You can easily duplicate an existing column by using the Duplicate Column button. For InterBase and Firebird, this will show a Duplicate Column dialog.
Editing & Viewing Data
The Data tab shows the table data, by performing a simple "SELECT * FROM table" SQL statement. Changes on this tab will not be saved unless you commit the transaction that is started when you modify data.
Clicking on the header of a column will sort the data by that column name, additionally, there's also a filter row where you can edit a SQL-based filter for each column.
Depending on the database engine capabilities, the Options tab holds multiple things.
At least one thing that it holds (except for MySQL), is the box to edit the primary key constraint name.
Sample Table Options page (in this case: Firebird)
For more information on the available options, see:
When using InterBase or Firebird, the toolbar shows an additional button "Column Specials". If a column has a small * next to it on the left, it has one or more "column specials" defined.
By using the Column Specials dialog, you can quickly create additional table objects, below is an explanation of each item. Depending on the datatype of the column, different items may be enabled.
The Column Specials dialog
All additional objects are named according to the naming templates in the Preferences.
When using InterBase or Firebird, using the Duplicate Column button shows the below dialog, for other database systems, it will simply create a copy of the column.
Duplicate Column dialog
In addition to simply duplicating the current column, you can create the following for the new column: