NIEM 5.0 Release (Current)

NIEM 5.0 is a major release, published December 2020. This is the most current NIEM release.

• Resources
• Highlights
• Specification Links
• Specification Updates
  • Naming and Design Rules (NDR) 5.0
• Release Stats

Resources

• Download the full release package as a zip file

• View schemas and documentation on release.niem.gov or GitHub

• Use online tools to explore the contents of NIEM 5.0:

  • Schema Subset Generation Tool (SSGT) - search or build XML schema subsets for use in IEPDs

  • Movement - search elements

  • Model Viewer - browse namespaces and their contents

• Download the component spreadsheet or the code spreadsheet to explore the contents of NIEM 5.0 in Excel

Highlights

• Added Controlled Unclassified Information (cui) as auxiliary content

• Added Statistics (stat) as auxiliary content

• Added additional Public Health Emergency Operations Center (PH EOC) requirements to the Emergency Management domain

• Moved Core code elements to code namespaces to break the import dependencies, allowing easy updates in minor releases

• Harmonized FBI code sets across the NCIC, NDEx, UCR, and Justice namespaces

• Replaced the full GML external standard with a simplified NIEM profile

• Re-established the structures:sequenceID attribute allowing explicit ordering of repeated elements

• Simplified the folder layout in the release package, removing extra nesting and versions.

See the NIEM 5.0 readme for a detailed list of changes.

Specification Links

The following are the NIEM specifications that can be used with this release:

Specification Updates

Naming and Design Rules (NDR) 5.0

The NIEM Naming and Design Rules (NDR) specification was updated from version 4.0 to version 5.0.

Key changes include:

• Simplified folder layout in the release package, removing version folders and unnecessary nesting (#140)

• Changed the character encoding of the XML schemas from “US-ASCII” to “UTF-8” for better international support (#125)

• Added attribute xml:lang to reference schemas (#153)

• Updated structures and appinfo utility schemas to version 5.0 based on NDR updates (#157)

• Reestablished the structures:sequenceID attribute (#154)

• Updated the conformance targets to correspond with the new 5.0 version of the NDR

See the NDR 5.0 changes for more.

Release Stats

The following are some basic statistics for the 5.0 release.

NIEM 5.0 has 14 domains and 2 auxiliary namespaces.

Summary Counts

The table below breaks down property, type, and code counts by namespace group.

• The “Core” group represents a single namespace (NIEM Core).
• The “Domain” and “Code Set” groups combine the counts from multiple namespaces and are broken out in the subsequent tables.

Domain Counts

The counts in the following table represent the namespaces that make up the “Domain” group in the summary table above.

Auxiliary Counts

The counts in the following table represent the namespaces that make up the “Auxiliary” group in the summary table above.

Code Counts

The counts in the following table represent the namespaces that make up the “Code Set” group in the summary table above.