An Example of Data Crosswalked with the Standard Using BLM Land And Minerals Records

Note: this example uses detailed information about entities and attributes from the standard, as well as concepts about crosswalks. If you are not yet familiar with these subjects we recommend you look at the section on "Description of the Standard" in course Module 2, the Directory of Entities and Attributes, and the section on crosswalks in course Module 5.

This example shows a small sample of information from one agency's land records database crosswalked to the Cadastral Data Content Standard. By inspecting the tables below you can begin to visualize how your own data might crosswalk with the Standard.

Certainly many people and organizations will not have any direct contact with the Bureau of Land Management's land and minerals record data, an example of which is used below. So don't be too concerned with knowing something about the BLM data. Concentrate instead on the usefulness of the example. Based on what you see below, start thinking about how your own data represents specific entities and attributes which can be found in the Standard.

Then, when it actually comes time to compare your data with entities and attributes of the Cadastral Data Content Standard, look back at this example as a guide for doing your own crosswalk.

The tables below illustrate information from a land description and from a homestead entry survey. The lefthand column of each table shows the information as it corresponds to the Cadastral Data Content Standard. The righthand column of each table shows how the same information corresponds to Bureau of Land Management land and minerals records. The ability to crosswalk entities and attributes between BLM data and the Cadastral Data Content Standard makes it possible for anyone with another database which is crosswalked to the Standard to relate their data to the BLM's.

From here use the links below to connect back to Module Three, which led to this crosswalk example, or continue on to any other Module.

Links to the Course Modules: [Quick Reference] [Introduction] [Module 1: Purpose and Benefits of the Cadastral Data Content Standard] [Module 2: How the Standard Was Developed] [Module 3: Other Standards and Related Activities] [Module 4: Data Modeling Techniques, Rules and Diagram Conventions] [Module 5: Crosswalks, Translations, and Examples] [Module 6: Understanding Compliance with the Standard] [Module 7: Maintenance of the Standard] [Module 8: User and Technical Support] [County Recorder Module] [GIS Specialist Module] [Surveyor Module] [Glossary]