Logic decoding method, computing device and database system

Abstract

The embodiment of the invention provides a logic decoding method, a computing device and a database system, data table metadata required by logic decoding can be synchronized to a decoding dictionary of a shared storage medium, and a logic log is generated according to the data table metadata in the decoding dictionary, so that the data table metadata does not need to be acquired from a system table, and the data processing efficiency is improved. Therefore, the system table can be quickly recovered, and database space expansion is reduced. The method comprises the steps that after a creation instruction of a logic copy slot is received, first data table metadata are obtained from a database according to the creation instruction, then the first data table metadata are stored in a decoding dictionary of a shared storage medium, and after transaction logs are sequentially obtained from pre-written logs, the first data table metadata are stored in a decoding dictionary of the shared storage medium; and generating a logic log according to the transaction log and the first data table metadata.

Images