As you import objects,
you can import the attribute data attached to the objects.
You can import the data
to one of the following:
- Existing object data table — By
default, incoming fields are imported into object data fields with
the same name. If no object data field exists with the same name,
the incoming field is not imported. If you don't want to do this,
use Object Data Mapping to map
incoming fields manually to object data fields with other names
or to create new fields.
Incoming data is converted to the data type
of the existing object data field. If this conversion fails (for
example, if you import characters to an integer field), AutoCAD Map 3D uses
0 for integers, 0.0 for real numbers, and "" for text.
- New object data table — By default,
the fields in the new object data table match the fields you've
chosen to import. If you do not want to do this, use Object
Data Mapping to select the fields to import or to change
the names of the object data fields.
When the data is imported, it will be converted
to the following object data types:
- Integer32, Integer16, and Boolean data
types are converted to the Integer data
type. For Boolean data, False is converted
to 0 and True is converted to 1.
- Float, Double, and Decimal data
types are converted to the Real data
- Char and Date data
types are converted to the Character data
Data is imported only if it is attached to an
incoming object. If no objects are found for an input layer, then
the object data table will not be created.
- External database — Imported
data is added to the external database table as new records.
- External database, link only — If
you do not need to add the data to the external database, you can
import just the links to the data. When you import links only, the
link from the object to the external data are maintained, but the
external database is not modified. This is much faster than importing
the entire record. This is a good option when importing SHP data.