Tag: Tutorials

• Locating provenance for a RESTful web service This blog post shows how RESTful web services can provide, and link to, provenance data for their exposed resources by using the PROV-AQ mechanism of HTTP Link headers. This is demonstrated by showing how to update a hello world REST service implemented with Java and JAX-RS 2.0 to provide these links. The PROV-AQ HTTP mechanism is easiest explained by an example: GET http://example.com/resource.html HTTP/1.1 Accept: text/html HTTP/1.1 200 OK Content-type: text/html Link: <http://example.
• Tutorial on the W3C PROV family of specifications Posted by Khalid Belhajjame Provenance, a form of structured metadata designed to record the origin or source of information, can be instrumental in deciding whether information is to be trusted, how it can be integrated with other diverse information sources, and how to establish attribution of information to authors throughout its history. The PROV set of specifications, produced by the World Wide Web Consortium (W3C), is designed to promote the publication of provenance information on the Web, and offers a basis for interoperability across diverse provenance management systems.