A Research On Data Quality Control In Data Migration

With the development of technology and information systems, legacy systems are replaced by more powerful and advanced information systems. In this process, historical data in legacy systems are crucial to the success of new systems. So data migration is of critical importance. High quality data not only ensures the successful launch of new systems, but also ensures its effectiveness and stability. So efforts should be took to discover and correct data problems which helps to reduce implementation costs and risks.Under this background, the author researches on how to control data quality in data migration process. First, analyze and measure data quality problem. Then, establish a comprehensive data quality strategy over the whole data migration process. This strategy includes data management practices, data quality control process as well as data quality control techniques.At last, the author put up a real-world case to verify the usefulness of the practices.