Define New Object Data Table dialog box
 
 
 

Use this dialog box to create a new object data table or to modify an existing table.

Table Name

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.

Note 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.
Object Data Fields

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.

  • To edit a data field, select its name in the list. Information about the field appears in the Field Definition section. Change any information. Click Update.
  • To delete a field, select its name in the list. Click Delete.
  • To delete all the fields in the list, click Delete All.

Field Definition

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.

Note 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.
Field Name

Enter a name for the data field.

The name cannot contain any spaces. It must start with an alphanumeric character.

Type

Select a data type.

Integer

An integer between -2,147,483,648 and 2,147,483,647

Character

Any characters, up to 132 characters

Point

Three real numbers separated by commas representing the X, Y, and Z values of a point

Real

A real number between -1.7E308 and 1.7E308

If you select Integer, numbers are rounded to the nearest whole number.

Description

Enter a description for the data field.

This description appears in the Object Data Fields list.

Default

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

  • All source drawings that use the table should be attached and active.

    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.

  • Do not perform a Draw mode query.

    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 User Login dialog box command to log in as a Superuser, or contact your system administrator.

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