XML Retrieval: A Survey

Nowadays in the world of the Internet and the Web, great amounts of information in various forms and different subjects are available to users. The available information can be divided into three categories: structured, unstructured and semi-structured. Information retrieval systems traditionally retrieve information from unstructured text which is a text without marking up. XML retrieval is content-based retrieval of structured documents with XML. The aim of XML retrieval is restoring related parts of an XML document that by exploiting the document structure can respond to users' needs. In this research we will examine the XML retrieval. Moreover, models, challenges and retrieve methods exactly are studied.