Use this dialog box to create a new object data table or to modify an existing table.
If you are modifying an existing table, the name of the table appears in the box.
If you are creating a new table, enter a name for the table. A table name cannot include spaces. It must start with an alphanumeric character.
Do not use a table name that is already used in another drawing, unless this table will have the same field definitions as that table. If two source drawings have tables with the same name but different definitions, AutoCAD Map 3D uses the table definition in the first drawing that is activated, and data from the second table is not available.
Select a data field to update or to delete a field.
The Object Data Fields list displays all data fields in the selected table.
If two source drawings have a table with the same name, AutoCAD Map 3D recognizes only the fields defined in the first drawing you activate.
Change information about an existing field or specify information for a new field.
To change information about an existing field, select its name in the Object Data Fields list. Information about the field appears in the Field Definition area. Change any information. Click Update.
To add a new field, enter a new name in the Field Name box. Enter information about the field. Click Add.
Before you add a field to an existing object data table, be sure all drawings that use this table are attached and active. Objects in active drawings are automatically updated to include the new field and are assigned the default value for the field. If an object that uses this table is not in an active drawing when the table is modified, the data attached to the object is not modified.
Enter a name for the data field.
The name cannot contain any spaces. It must start with an alphanumeric character.
Select a data type.
An integer between -2,147,483,648 and 2,147,483,647
Any characters, up to 132 characters
Three real numbers separated by commas representing the X, Y, and Z values of a point
A real number between -1.7E308 and 1.7E308
If you select Integer, numbers are rounded to the nearest whole number.
Enter a description for the data field.
This description appears in the Object Data Fields list.
Specify a default value for the data field.
The value must match the data type you selected above.
Enter the value you will use most often when you assign this data field to an object.
Before you modify a table
If a drawing is not attached and active, the table definition will not be updated for that drawing. If two source drawings have tables with the same name but different definitions, this operation affects the table definition in the first drawing that is activated, and data from the second table is not available.
If you have already performed a Draw mode query since you opened the current drawing, you must save the objects back to their source drawings or close the current drawing and reopen it.
You can modify newly defined tables until you perform a save operation (either saving objects back to source drawings or saving the current drawing). Once you perform a save operation, the table can be modified only by a Superuser. Use the MAPLOGIN command to log in as a Superuser, or contact your system administrator.