The tools in the vertical toolbar on the left of the
EER Diagram tab are used for designing an
EER diagram. Start by creating a table using the table tool. The
table tool is the rectangular grid in the middle of the vertical
toolbar. Mousing over it shows the message, Place a New
Table (T)
.
Clicking on this tool changes the mouse pointer to a hand with a
rectangular grid. Create a table on the canvas by clicking
anywhere on the EER Diagram
grid.
Right click the table and choose Edit in New Window from the pop-up menu. This opens the table editor, docked at the bottom of the application.
The table name defaults to table1
. Change the
name by entering invoice
into the
Name: text box. Notice that the name of the
tab in the table editor and the name of the table on the canvas,
both change to this new value.
Pressing Tab or Enter while
the cursor is in the table name text box, selects the
Columns tab of the table editor and creates
a default column named, idinvoice
.
Pressing Tab or Enter again
sets the focus on the Datatype
drop-down list
box with INT
selected. Notice that a field
has been added to the table on the EER canvas.
Pressing Tab yet again and the focus shifts to
adding a second column. Add a Description
and
a Customer_id
column. When you are finished,
close the table editor, by clicking the x
button on the top left of the table editor.