: Schema.org is complex data model proposed by Google, Yahoo, others for search engine optimization task. The sets of entities were described by object-properties which can be described by an instance

Schema.org is complex data model proposed by Google, Yahoo, others for search engine optimization task. The sets of entities were described by object-properties which can be described by an instance of other entity. As result, proposed data model describes so deeply the complex graph-oriented relationships among entities and their properties what is very useful for working with ontology and knowledge-driven intellectual systems.

Schema.org is a community-created vocabulary (sponsored by Google, Microsoft, Yahoo and Yandex) for describing entities on webpages, in emails etc. It is commonly used with the json-ld, microdata, or rdfa syntax and it is considering a markup support for search engine too.

Related tags

structured-data
semantic-web
Syntaxes:

json-ld
microdata
rdfa

Tools:

google-rich-snippets-tool

What consumers (like search engines) may do with Schema.org markup:

rich-snippets

Other vocabularies:

open-graph-protocol
productontology.org
data-vocabulary.org

External links

Official website: schema.org/ Wikipedia page: en.wikipedia.org/wiki/Schema.org GitHub: github.com/schemaorg/schemaorg W3C Community Group: www.w3.org/community/schemaorg/ Mailing list: lists.w3.org/Archives/Public/public-schemaorg

Consumer documentation

Bing: www.bing.com/webmaster/help/marking-up-your-site-with-structured-data-3a93e731 Google: developers.google.com/webmasters/structured-data/ Yandex: help.yandex.com/webmaster/schema-org/what-is-schema-org.xml