This paper presents an object-based method for indexing recursive structured XML data and process branched queries efficiently. The proposed method is called Object-based Twig Query processing for Recursive data (OTQ). It is an extended approach of our existing work in [1] in order to handle recursion in XML data. Our motivation of extending OTQ to OTQ is to support many applications that require recursive data structure to be fully functional. OTQ is proposed to utilize semantics of XML data to efficiently process branched queries on recursive XML data. The experiments and evaluation are presented to cover variant evaluating points and the efficiency of our approach.
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