The Department of Homeland Security (DHS) Geospatial Management Office developed the DHS geospatial data model (GDM) to support geospatial interoperability and information sharing. Geospatial operations at the DHS will be based on the model, as will data exchanges with allies in the homeland security and disaster management community.

This geospatial model is a standards-based, broad logical view of the content layers, features, and attributes which may be used in homeland security activities. Implementation (or physical) models based on this logical construct will be used by various mission owners within DHS and its allies across the homeland security community as they discover, collect, store, and share geospatial data.

The model will also form the core standard for the Department’s emerging services-based geospatial infrastructure, and will serve as an extract, transform, and load (ETL) template for content aggregation.

The model is constructed as a Unified Modeling Language (UML) class diagram, and is available in a number of formats for download and review. These versions are available here:

• DHS GDM v2.0 - Sparx Enterprise Architect Data Model (7.9MB) (zipped .EAP file for use with Sparx EA only)
• DHS GDM v2.0 - XML Metadata Interchange (XMI) 1.1 for UML 1.3 Export (5.8MB) (zipped .XMI/XML file for import into UML modeling software)
• DHS GDM v2.0 - XML Metadata Interchange (XMI) 2.1 for UML 2.1 Export (7.6MB) (zipped .XMI/XML file for import into UML modeling software)
• DHS GDM v2.0 - Interactive HTML Data Model Documentation (please use Microsoft Internet Explorer 6.x or Mozilla Firefox web browsers only)
• DHS GDM v2.0 - Downloadable Interactive HTML Data Model Documentation (20.1MB) (zipped HTML files; access the root file “index.html”)
• DHS GDM v2.0 - Data Dictionary (HTML Version) (1.2MB) (zipped documentation of data elements and value domains)
• DHS GDM v2.0 - Data Dictionary (PDF Version) (5.8MB)
• DHS GDM v2.0 - Oracle Spatial 10g Profile Implementation Guide (MS Word Version) (227 KB) (zipped documentation for Oracle Spatial 10g SQL installation)
• DHS GDM v2.0 - Oracle Spatial 10g Profile Implementation SQL (335KB zipped, 3.29MB unzipped) (zipped directory tree containing SQL scripts for Oracle Spatial 10g Profile Implementation)
  

Those with an interest in supporting the model are encouraged to provide comments to the FGDC Homeland Security Working Group. If you would like to participate in the model’s development, please download the DHS Geospatial Data Model Comment Resolution Matrix [Excel] and add your comments. Forward your completed matrices as an email to hswg-review [at] fgdc.gov.  All comments will be compiled and reposted to this website. Comments will be adjudicated through the FGDC Homeland Security Working Group (HSWG), Content Subgroup, and results reposted to this website.

If you would like to access the previous version 1.2 of the geospatial model, first published on 4 June 2007, please use the links below:

• DHS GDM v1.2 – Sparx Enterprise Architect Data Model (6.5MB) (zipped .EAP file for use with Sparx EA only)
• DHS GDM v1.2 – XML Metadata Interchange (XMI) Export (6.8MB) (zipped .XMI/XML file for import into UML modeling software)
• DHS GDM v1.2 – Interactive HTML Data Model Documentation (please use Microsoft Internet Explorer 6.x or Mozilla Firefox web browsers only)
  
• DHS GDM v1.2 – Downloadable Interactive HTML Data Model Documentation (14.4MB) (zipped HTML files; access the root file “index.html”)
• DHS GDM v1.2 Beta – Oracle Spatial 10g Profile SQL Scripts (0.3MB) (zipped SQL installation scripts for Oracle Spatial 10g)
• DHS GDM v1.2 – Oracle Spatial 10g Profile Implementation Guide (MS Word Version) (1.4MB) (zipped documentation for Oracle Spatial 10g SQL installation)
• DHS GDM v1.2 – Oracle Spatial 10g Profile Implementation Guide (PDF Version) (0.4MB) (zipped documentation for Oracle Spatial 10g SQL installation)
• DHS GDM v1.2 – ESRI Shapefile to Oracle 10g Conversion Tool Java UI Application (1.7MB) (zipped documentation and Java executable with user interface)
• DHS GDM v1.2 – ESRI Shapefile to Oracle 10g Conversion Tool Source Code (1.6MB) (zipped documentation and Java source code)
• DHS GDM v1.2 – Data Dictionary (HTML Version) (1.0MB) (zipped documentation of data elements and value domains)
• DHS GDM v1.2 – Data Dictionary (PDF Version) (3.1MB) (zipped documentation of data elements and value domains)
  
  

If you would like to access the previous version 1.1 of the geospatial model, first published on 25 May 2006, please use the links below:

• DHS GDM v1.1 – Sparx Enterprise Architect Data Model (5.6MB) (zipped .EAP file)
• DHS GDM v1.1 – Data Model Documentation (3.9MB) (zipped .PDF file)