To assure success in a collaborative environment where consistent description of digital resources is critical for interoperability, the Oklahoma State University Library has designated the following mandatory elements:

       Required

• Identifier
• Title
• Type

       Mandatory, if applicable:

• Creator
• Description
• Subject
• Scope and Contents
• Date Original 
• Date Digital
• Format
• Rights

Non-mandatory, but highly recommended:

• Publisher
• Contributor
• Source
• Collection Name
• Language
• Relation
• Coverage
• Technical Specifications
• Transcript

Richer, more complete records increase the likelihood that database users will locate the desired digital resource.