Searching and storing method for embedded database
A database and embedded technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of non-commercial database transplantation and high cost of database use, achieve high retrieval efficiency, low resource consumption, and improve utilization Effect
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[0038] Such as figure 1 As shown, the index file contains header file information, hash table and AVL tree, and index information. The detailed structure of the index file is as follows figure 2 shown. In the index file, the header file information includes the total number of records, the serial number of the hash function, the size of the hash table, and the length of the table unit. The hash table is divided into tables of the same length, and the table records the entry address of the AVL tree in the index file. The AVL tree and index information include: left subtree entry address, right subtree entry address, keywords and their record addresses and record length. Data files save records one by one.
[0039] Such as image 3 As shown, the AVL tree model established according to the organizational structure of the above index file. The invention uses an AVL tree to handle hash conflicts, and the index information stored in each leaf node of the AVL tree includes the...
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