Autodesk 15606-011408-9005 - MAP R6.3 NAMED-10U PK, Tutorials Manual, Page: 256 / 332

■ Save a map in DWG format so AutoCAD users (without access to AutoCAD
Map 3D) can edit map data.
Select the appropriate method to move data into or out of a map:
Update Options Method
If you change the objects, you can update
the original drawing or not. Attach a drawing to your map and then
query in the objects to use.
You can maintain a live connection to the
data, or work offline and update your data
store when you finish. Connect to geospatial (FDO) data.
When you use this option, you do not af-
fect the original data store. Changes in that
data store do not change your map. Import data into your map, automatically
converting it to DWG format. Importing
inserts a "snapshot" of the data. You can
import from various geospatial sources.
The original data is unchanged. Export drawing objects to various formats.
No geospatial features are exported, but
you can save all the features and objects
in your map to AutoCAD DWG format and
then export it.
The original geospatial data source is un-
changed. Use Bulk Copy to convert geospatial data
to another geospatial format.
The original DWG data is unchanged. Export your map or individual drawing
layers to the Autodesk SDF format, or to
SHP, ArcSDE, or Oracle. Then use Bulk
Copy to move it to other formats.
Converting Drawing Layers to Feature Classes
In an AutoCAD drawing, you can use layers to organize information. For
example, an AutoCAD drawing can contain separate layers for roads, parcels,
and so on. Geospatial data stores use schemas for this purpose. In a schema,
each feature class can serve the same purpose as a drawing layer.
SDF is a proprietary Autodesk format. It supports a schema that can include
multiple feature classes within a single file, the same way that a single drawing
can include multiple drawing layers. In this tutorial, you create an SDF file
with a schema whose feature classes reflect the layer structure of a drawing
248 | Chapter 7 Tutorial: Managing Data From Different Sources