Structural Join in the 'XSQS' Native XML Database

摘要

Query processing has attracted significant attention since XML database is proposed. This paper focuses on structural join mainly in our native XML storage and query system (XSQS). A hybrid structural join strategy based on tree-merge algorithm and stack-tree algorithm is proposed. Moreover, a path index scheme is designed to accelerate the query processing. Experimental results show that the proposed hybrid strategy and the index have a good performance in query processing of XSQS.