Data paralleling abstracting method and apparatus and database system

The invention provides a data parallel extraction method, a device and a database system which are applied to improving the extraction performance of the existing parallel extraction technique. The technical scheme provided by the embodiment of the invention is that according to the identification information of a database to be extracted, the distribution information of a storage area of the database to be extracted is obtained; according to the distribution information of the storage area, the storage area of the database is divided into storage subareas with set numbers; a data extraction subprocess with a set number is established; the extraction subprocess of each data is in parallel, and data in a database table to be extracted are extracted from one of the storage subareas. Therefore, data in neighboring or near physical storage areas are assigned to the same extraction subprocess as far as possible, and during the extraction process of each subprocess, the moving range of a pointer is confined into a