OrientX is written in C , the Native XML database management system, supports the establishment and maintenance of the database (using the dataset Dataset), and the data manipulating the extended XQuery (support insertion node, update attributes, and text values, delete nodes).
Its system feature statement: 1. Mode-based NXD, 2, follow W3C recommended XML Data Model standard, 3, storage diversity (based on elements, subtree, logical cluster storage, elements-based clustering), 4, Path Storage Provides a class DOM interface and supports three index (element index, path index, value index), 5, data retrieval support W3C recommended XQuery 1.0 standard, 6, using system-extended xQuery to support data updates.
XQuery query steps: 1, grammar analysis, semantic check, generating execution plan, 2, optimization, 3, execution.
