Abstract: A binary object XML repository for storage and retrieval of data in XML documents includes import manager capabilities for converting file formats to XML. Indexing capabilities encode XML document data in a binary data structure for storage within lexicon(s) in the form of tokens and token types, with a token including data elements corresponding to XML syntax. The lexicon(s) also assigns token identifier numbers, which sequence module(s) store in an original sequence. Postings module(s) map the token identifier numbers to the token identifier's position in the original sequence.