Index file search method index file and search device

摘要

PPROBLEM TO BE SOLVED: To enable high-speed retrieval processing by making an overhead subjected to exclusive control small in performing index retrieval processing. PSOLUTION: When an index retrieval request is received from a user terminal 101, a processing request control means 102 determines the entire index as one exclusive resource so as to collectively perform exclusive control, and an index file accessing means 104 retrieves an index in an index file 106. The index file accessing means 104 uses an exclusive control means 105 to perform exclusive control, accesses the index file 106, extracts a block image and transfers the block image to the processing request control means 102. PCOPYRIGHT: (C)2004,JPO