AN ADVANCED TECHNIQUE FOR RAPID DATA PROCESSING IN CLOUD COMPUTING USING X-QUERY

XQuery was designed as a query language for XML data. The goal was to provide the expressive power of a query language like SQL and to support XML-specific operations such as navigation in hierarchical data. From the very beginning, an important feature of XQuery has been the capability to process untyped data. It can be concluded that XQuery tries to combine the features of existing programming languages like SQL, Java, or even PHP. XQuery allows to implement sophisticated applications in a single tier and with a single uniform technology, thereby avoiding impedance mismatches and improving flexibility and customizability. Like SQL, XQuery supports declarative queries and updates and is able to specify bulk queries and updates which are best executed inside a database. XQuery provides a special kind of architectural flexibility in the sense that XQuery runs on all application tiers. It runs in the database layer as it has been implemented by all major database vendors as part of their database products. Furthermore, XQuery runs in the middle-tier