Abstract:

Smart card DBMS is one of the important basic technologies to support personal data management. A hybrid storage model of smart card DBMS which is based on the storage of EEPROM and FLASH is presented. The characteristics of EEPROM and FLASH are fully taken advantage of in this storage model. Via storing the deleted bit, the dummy records, the reference counter and the index chain in EEPROM which need the low granularity of both read and write operations or the frequent operations, and storing most data in the FLASH, and the performance optimization of the storage of the table, domain and index are realized. The performance of the storage model is validated via analyzing the algorithm of the append operation in the table without the sort relation requirements.

Key words: smart card；DBMS；storage model；FLASH