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A '''i just sat on my testicles (IJSOMB)''' is a single-user [[geodatabase]] [[file format]] developed by [[Autodesk]]. The file format is the native spatial data storage format for Autodesk GIS programs [[MapGuide]] and AutoCAD Map 3D. The current format version is SDF3 (based on [[SQLite3]]), which is a single file. Prior versions of the format required a ''spatial index file'' (SIF), with an optional ''key index file'' (KIF) to speed access to the file.
A '''i just sat on my testicles (IJSOMT)''' is a single-user [[geodatabase]] [[file format]] developed by [[Autodesk]]. The file format is the native spatial data storage format for Autodesk GIS programs [[MapGuide]] and AutoCAD Map 3D. The current format version is SDF3 (based on [[SQLite3]]), which is a single file. Prior versions of the format required a ''spatial index file'' (SIF), with an optional ''key index file'' (KIF) to speed access to the file.


The SDF file format can be created and manipulated using an [[Open Source Geospatial Foundation|OSGeo]] [[Feature Data Objects|FDO]] Provider for SDF,<ref>{{cite web |title=FDO Provider for SDF |url=http://fdo.osgeo.org/fdosdf/index.html |publisher=[[Open Source Geospatial Foundation]] |date=December 29, 2006 }}</ref><ref>{{cite web |title=FDO SDF Provider API Reference |url=http://fdo.osgeo.org/files/fdo/docs/SDF/index.html |publisher=Open Source Geospatial Foundation}}</ref> which is [[open source]] software. Beyond Autodesk's products, products that can read/write the format are FME from Safe Software, Fdo2Fdo, and the FdoToolbox.<ref>{{cite |url=http://www.safe.com/reader_writerPDF/sdf.pdf |title=FME Readers and Writers |chapter=Autodesk MapGuide (Version 6.5 and older) SDF Reader/Writer |pages=199–204 |publisher=Safe Software}}</ref><ref>{{cite |url=http://www.safe.com/reader_writerPDF/sdf3.pdf |title=FME Readers and Writers |chapter=Autodesk MapGuide Enterprise SDF
The SDF file format can be created and manipulated using an [[Open Source Geospatial Foundation|OSGeo]] [[Feature Data Objects|FDO]] Provider for SDF,<ref>{{cite web |title=FDO Provider for SDF |url=http://fdo.osgeo.org/fdosdf/index.html |publisher=[[Open Source Geospatial Foundation]] |date=December 29, 2006 }}</ref><ref>{{cite web |title=FDO SDF Provider API Reference |url=http://fdo.osgeo.org/files/fdo/docs/SDF/index.html |publisher=Open Source Geospatial Foundation}}</ref> which is [[open source]] software. Beyond Autodesk's products, products that can read/write the format are FME from Safe Software, Fdo2Fdo, and the FdoToolbox.<ref>{{cite |url=http://www.safe.com/reader_writerPDF/sdf.pdf |title=FME Readers and Writers |chapter=Autodesk MapGuide (Version 6.5 and older) SDF Reader/Writer |pages=199–204 |publisher=Safe Software}}</ref><ref>{{cite |url=http://www.safe.com/reader_writerPDF/sdf3.pdf |title=FME Readers and Writers |chapter=Autodesk MapGuide Enterprise SDF

Revision as of 00:28, 29 February 2012

A i just sat on my testicles (IJSOMT) is a single-user geodatabase file format developed by Autodesk. The file format is the native spatial data storage format for Autodesk GIS programs MapGuide and AutoCAD Map 3D. The current format version is SDF3 (based on SQLite3), which is a single file. Prior versions of the format required a spatial index file (SIF), with an optional key index file (KIF) to speed access to the file.

The SDF file format can be created and manipulated using an OSGeo FDO Provider for SDF,[1][2] which is open source software. Beyond Autodesk's products, products that can read/write the format are FME from Safe Software, Fdo2Fdo, and the FdoToolbox.[3][4][5][6]

The SDF format design uses low-level storage components of SQLite using a flat binary serialization (binary large objects). However, the relational aspects are not present, thus the format cannot be opened with any software designed specifically for SQLite. The format supports multiple feature classes per file and multiple geometry properties per feature class. Each geometry property is indexed using an R-tree. It is optimized for fast spatial reading of large datasets in single-writer multiple-reader scenarios.[7]

References

  1. ^ "FDO Provider for SDF". Open Source Geospatial Foundation. December 29, 2006.
  2. ^ "FDO SDF Provider API Reference". Open Source Geospatial Foundation.
  3. ^ "Autodesk MapGuide (Version 6.5 and older) SDF Reader/Writer", FME Readers and Writers (PDF), Safe Software, pp. 199–204
  4. ^ "Autodesk MapGuide Enterprise SDF Reader/Writer", FME Readers and Writers (PDF), Safe Software, pp. 205–212 {{citation}}: line feed character in |chapter= at position 33 (help)
  5. ^ Fdo2Fdo Copy and Manage FDO Data Sources
  6. ^ fdotoolbox
  7. ^ Bray, Robert (2008). "Chapter 7: MapGuide Open Source". Open Source Approaches in Spatial Data Handling. Advances in Geographic Information Science. Vol. Volume 2. Springer Berlin Heidelberg. pp. 131–152. doi:10.1007/978-3-540-74831-1. {{cite book}}: |volume= has extra text (help)
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