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.
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
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) file. The resulting file contains geometry and attribute data,
but no styling data.
If you have joined
data 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.
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.
You can use exported
layers for any of the following:
- As a map layer in Autodesk MapGuide Enterprise
or MapGuide Open Source.
- To package the layer contents as a personal
geospatial data store. The resulting SDF file can be opened and
edited in any application that supports this 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
can also export all DWG objects to SDF3 format, and you can copy
features from one geospatial format to another using Bulk