2011

Saving or Exporting a Display Manager Layer
You can save or export information about geospatial layers in Display Manager
(including annotation layers) to separate files. Only geospatial features are
saved or exported. You can export to SDF or SQLite format.
This allows you to package data that is ordinarily stored in a central data store,
such as an Oracle database, into a geospatial data file. However, all connection
to the original data store is lost and changes you make to the SDF or SQLite
file will not update the central data store.
Saving vs. Exporting
If you use the export option, you can export a single layer to an Autodesk SDF
(version 3) or a SQLite file. The resulting file contains geometry and attribute
data, but no styling data.
If you have
joined data (page 507) to the layers you are exporting, the joined
data is also exported. However, metadata is not exported with the layer. For
information about exporting metadata, see Sharing Metadata (page 1510).
If you use the save option, you can save one layer at a time. When you save
a layer, you save its styling information and pointers to the data source that
defines its geometry and attributes. You can drag and drop saved layers into
any map to reuse them.
You cannot use a saved layer and an exported layer together because saved
layers point to the current data for the layer while exported layers contain a
“snapshot” of the data at the time they were exported, and these data
definitions may differ.
Using Exported Layers
You can use exported layers for any of the following:
■ As a map layer in Autodesk MapGuide Enterprise or MapGuide Open
Source.
NOTE This format is not readable by Autodesk MapGuide version 6.5 or earlier.
Instead, see
Exporting DWG Data to SDF2 Format (page 1417).
■ To package the layer contents as a personal geospatial data store. The
resulting SDF or SQLite file can be opened and edited in any application
that supports the format. However, once you export the layers, they lose
their connection to their original data store, and any changes you make
will not be updated in that data store.
Saving or Exporting a Display Manager Layer | 1469