Friday, May 22, 2020

Database Xml And Resource Description Framework ( Rdf )

A triplestore is a non-relational database that stores and retrieves triples using semantic queries. Triples store data and are imported and exported using the Resource Description Framework (RDF). A triple is a data entity comprising three components a subject, predicate and object that describe a set of data such as â€Å"We have shoes†. The subject is â€Å"We†, the predicate is â€Å"have† and the object is â€Å"shoes†. Triples provide an easy and flexible way of modeling data that is similar to how the human brain functions. Triples have a semantic structure that can easily represent connections between structured data and free flowing text. Triples form interconnected data networks (graphs), which are easy-to-read and can represent complex data structures. Information is stored in a triplestore and retrieved using a database query language called SPARQL. SPARQL is a query language for RDF data. It is a basic method for querying remote databases over HTTP. SPARQL can perform graph pattern matching queries and allows users to specify types of accessibility and navigational queries (the shortest distance between two nodes or how two nodes are connected) in triplestores. SPARQL generates powerful queries and reasons intuitively on the data in a triplestore. This also allows computers to reason intuitively on data. The information in triplestores can be stored, accessed and manipulated much easier versus using a relational database exponentially expanding data management and storageShow MoreRelatedDefining New Languages For Querying Rdf Data1314 Words   |  6 Pageslevel the RDF model can be written down in XML notation. It would therefore seem reasonable to assume that query RDF using an XML query language. However, this approach disregards the fact that RDF is not just an XML dialect, but has its own data model that is very different from the XML tree structure. 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