1. RDF mode and XML mode are different XML data modes to be a text scalable language. In contrast, RDF has a very simple mode, namely binary relationship mode. Of course, any RDF declaration can be represented by XML, but XML is set to fixed, tree text, lacking certain flexibility on the data element. The RDF mode is sufficiently flexible to describe this subjective, distributed, metadata expressed in different forms. 2. RDF and XML use of nodes discussed in XML in XML, which are nodes in the XML document, especially in the document structure. In the RDF, the node is not in the node itself, but any other resource that can be identified by URIS, so RDF is a metadata language. 3. XML? Schema and RDF language different ???? XML? Schema initial language interpretation is limited to the XML document, it is implicit. RDF is originally explained, used to model knowledge that cannot be modeled well with a tree structure. In short, XML / XML? Schema is a data modeling language, RDF is a metadata modeling language, and when metadata needs to encode into data, XML syntax is very useful, if the pure use of XML language is modeled, then Flexibility will be hindered
4.?XML has XML? Schema constraints its syntax structure, while the syntax of RDF is the XML format, but does not have XML? Schema to constrain its structure, and RDF? Schema is interpretative?, Explain RDF? The meaning of the vocabulary.
5.?rdf can be seen as a web knowledge representation language, or a logical language, formal syntax, model context, proven, and completeness, reliability, in summary, is a complete formal system. • XML is just a language for describing the grammar, that is, the syntax of other languages can be based on XML.
6. The RDF file can be merged, aggregated, and the merger and aggregation of the XML file has a limitations of namespaces.
7. The data model of the RDF is? The data model of the unordered side is marked, and the data model of XML is an ordered node with a tree structure diagram. 8. RDF relative to XML is free, Good interoperability, while XML has SCHEMA constraints.
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XML is a data exchange format RDF is a knowledge expression language. RDF has a variety of grammar, such as RDF diagrams, N3 (triplets), RDF / XML, etc. (XML is just an optional writing method of RDF). RSS is a format that describes site information. There are a variety of competitive versions, and their main differences are different (but Datong), and the writing formats are different. W
3C
The RSS standard is RDF as its format.
Say that RSS is a subset of RDF, which emphasizes that RDF can be used to describe a lot of knowledge, and RSS is one of them; saying RDF is a subset of RSS, which emphasizes that RSS can be written in multiple formats, while RDF is only one of them. Format.
This can also be said to say: RDF is a knowledge expression language or describes the site information format. RSS is a format that describes site information, or uses RDF to describe it. In addition, RDF has such two types: resource? Description? Framework? And? Resource? Description? FormaTrss also has three calligraphics: really? Simmary? And RDF? Site? Summary? And Rich Site Summary, for RDF Differentiated by RSS is the statement describing the focus of different side.
