Master data storage method based on primary copy storage pattern

The invention discloses a master data storage method based on a primary copy storage pattern. The master data storage method is characterized by comprising the following steps: (1) dividing master data into core master data and non-core master data, (2) storing the core master data into a master data management system database, setting up a core master data copy, and storing the core master data copy into a service system database, (3) storing the non-core master data into the service system database, setting up a non-core master data copy, and storing the non-core master data copy into the master data management system database. By the adoption of the method, operation and maintenance risks caused by external factors of a system can be reduced, and the reliability and the stability of service function can be improved.