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The B+_ tree index mechanism is applied extensively in the embedded database system. But it wastes the saving space. This paper analyzes the definition , querying algorithm , inserting algorithm , deleting algorithm of the B+_ tree. On this foundation, the inserting and deleting algorithm is improved, the improvement B+ tree is defined and the deleting and inserting process of the improvement B tree is explained in detail. On contrast, the improvement index mechanism can raise the space utilization greatly.
Date of Conference: 21-25 Sept. 2007