Domain Specifications

A Domain Specification (DS) is a formalized, machine-readable, and structured document that defines syntactic and semantic, domain-specific constraints for Schema.org annotations. The main purpose of Domain Specifications is to define a standard to which schema.org annotations have to comply, this is checked during a process called "domain-specific verification". Domain Specifications can also be used as a dynamic guideline for the creation, mapping and presentation of structured data.

Since the concept of Domain Specifications has been enhanced multiple times, documentation for the different versions is provided:

• DS-V7 - Stable (latest in use)

• DS-V6 - Unused

• DS-V5 - Deprecated

• DS-V4 - Deprecated

• DS-V3 - Deprecated

• DS-V2 - Deprecated

• DS-V1 - Deprecated

Note that the term "Verification" was introduced as our standard to define the process of checking the compliance of given data based on a given domain specification. Before that, we used the term "Validation", which could still appear on some parts of this documentation.