Linked Data
Thu, 21 Jul 2022 09:38:15 GMT — Properties
Properties
| Key | Value |
|---|---|
| Identifier | linked-data |
| Name | Linked Data |
| Type | Topic |
| Creation timestamp | Thu, 21 Jul 2022 09:38:15 GMT |
| Modification timestamp | Thu, 21 Jul 2022 09:53:57 GMT |
Tim Berners-Lee came up with these four principles of Linked Data in 2006:
- Use URIs as names for things. URIs are the best way available to uniquely identify things, and therefore to identify connections between things.
- Use HTTP URIs so that people can look up those names. You may have seen URIs that begin with ftp:, mailto:, or prefixes made up by a particular community, but using these other ones reduces interoperability, and interoperability is what it's all about.
- When someone looks up a URI, provide useful information, using the standards, for example, RDF, SPARQL. While a URI can just be a name and not actually the address of a web page, this principle says that you may as well put something there. It can be an HTML web page, or something else; whatever it is, it should use a recognized standard. RDFS and OWL let you spell out a list of terms and information about those terms and their relationships in a machine-readable way — readable, for example, by SPARQL queries. Because of this, if a URI that identifies a resource leads to RDFS or OWL declarations about that resource, this is a big help to applications.
- Include links to other URIs so that they can discover more things. Imagine if none of the original HTML pages had a elements to link them to other pages. It wouldn't have been much of a web. Going beyond this HTML linking element, various RDF vocabularies provide other properties that let you say "this data (or this element of data) has a specific relationship to another resource on the Web." When applications can follow these links, they can do interesting new things.