METHOD FOR CODING AND CALCULATION OF OBJECT IN DATABASE SYSTEM AND DATABASE SERVER

摘要

The present invention discloses an object encoding and computation method in a database system, a database management system, and a database server. A global object sample space is constituted based on correlation between a plurality of object sample spaces in a database. A global dictionary table is created in the global object sample space, to provide a globally unique encoding value for each object, use the encoding value as an object identifier of the object, and ensure that the object identifier and object description information are in a one-to-one mapping relationship. The database object is encoded and compressed based on the global dictionary table, and therefore encoding overheads are reduced. Further, the object identifier is directly used for database query computation, so that string-type computation is optimized as integer-type computation, and computation efficiency is improved.