Data migration method and system

The application provides a data migration method and system. Data flow directions in a data migration process are determined according to a target data migration scheme; a data transfer dependency relationship graph is drawn according to the data flow directions in the data migration process; a data migration scheduling instruction plan is formulated according to the data transfer dependency relationship graph; and data migration is executed according to data migration instructions in the data migration scheduling instruction plan. Intricate inter-system data transfer dependency relationshipsare enabled to be specific and graphical, then the perfect data migration scheduling instruction plan is formulated, data migration is executed according to the plan, and data migration efficiency isimproved. 本申请提供了种数据迁移方法及系统，根据目标数据迁移方案确定数据迁移过程中的数据流向；根据数据迁移过程中的数据流向绘制数据传递依赖关系图；依据所述数据传递依赖关系图制定数据迁移调度指令计划；根据所述数据迁移调度指令计划中的数据迁移指令，执行数据迁移。将错综复杂的系统间数据传递依赖关系具体化、图形化，进而制定完善的数据迁移调度指令计划，按照计划执行数据迁移，提高了数据迁移效率。