Database management systems for managing data with data confidence

摘要

Data records and associated data confidence of data in each data record are both stored in a database system. Each data record includes a data confidence. The data confidence indicates an accuracy or reliability level of the data of corresponding data record. The data records with confidence information are constructed in memory before they are stored into the database system. When the data records are retrieved from the database for analysis, the data confidence is retrieved as well. The analysis of data contained in the data records further considers the data confidence. The analysis result is thus affected by the data confidence.