IJERT - International Journal of Engineering Research and Technology
XML has emerged as the wire-language of the internet. XML can be used to structure the data and also provide meaning for data. An effective document structure helps convert data into useful information that can be processed quickly and efficiently. The XML data is exchanged and generated in B2B1 applications. According to this point there is need for efficient processing of queries on XML data. The research stream in XML database is processing of XML Tree Pattern Query (XTPQ) with efficient answer (called pattern matching).The XML document can be converted into tree model by using DOM (Parser).The XML query languages like XPath (EXtensible path language), XQuery (EXtensible Query language) represent queries on XML data as tree patterns (twigs).