NSDI logo

Understanding Compliance With The Standard

Section 6 of the On-line Course:

Learning the Cadastral Data Content Standard

Section 6 describes what it means to be in compliance with the Standard


Topics in Section 6:


Compliance

The Cadastral Data Content Standard contains definitions of entities and attributes (with domains of values) and relationships among attributes in the form of a logical data model. This model is a means of expressing the definition and relationship standards for cadastral data. The intent of the Standard is to provide a consistent and uniform means of communicating cadastral information in support of the National Spatial Data Infrastructure (NSDI).

The degree of compliance with the Standard can be based on the following three criteria:

Naming Conventions - Does the implementation of the Standard use the entity and attribute names listed in the Standard? To facilitate implementation, the Cadastral Subcommittee has developed standard abbreviations that can be used in all databases and applications. The abbreviations are six letters in length and are unique.

Relationships - Does the implementation of the Standard adhere to the relationships defined in the standard? For example, the Standard specifies that Public Land Survey System (PLSS) Sections must be contained with one and only one PLSS Township.

Domain of Values - Does the implementation of the Standard use the values for the attributes as listed in the Standard? There is a domain of values listed for each attribute in the Standard. Each domain also has a free text value. If the implementation needs to add values to the domain of values listed, this should trigger a maintenance request.

The level of compliance is defined by how well implementation of the data conforms in Naming Conventions, Relationships, and Domain of Values. These possible combinations and associated levels of compliance are shown in the table below.
 

LEVEL OF COMPLIANCE NAMING CONVENTIONS RELATIONSHIPS DOMAIN OF VALUES
Full Compliance Yes Yes Yes
Structurally Compliant Yes Yes No
Semantically Compliant Yes No Yes
Domain Compliant No No Yes

Transferability and Crosswalks - A data set or application that is transferable has completed a crosswalk to the Standard and has the information available to a requester such that the existing data could be transferred into one of the above shown levels of compliance. The crosswalk would compare the existing information with the Standard and identify where the existing information matches the Standard information. The crosswalk would also indicate the level of compliance that could be achieved.


This ends Course Section 6. Use the links below to return to the top of this page, or to go on to Section 7, or any of the other Sections or Modules.


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


Learning the Cadastral Data Content Standard

Home

Presented by the United States Department of the Interior Bureau of Land Management, and

the Federal Geographic Data Committee Cadastral Subcommittee