Parallel Data Warehouse Metadata Management, Concurrency Control And Recovery Strategy

Data Warehouse is a collection of data which is subject-oriented, integrated, time-varying, non-volatile, primarily used in organizational decision making. Data Warehouse has high value not only in academic research , but also in application, it helps company managers make good decision and provides decision support. Nowadays, The research on Data Warehouse is the new focus of information technology. This paper focuses on the organization and management of metadata, concurrency control, recover of data in Data warehouse. It presents a method of organizing metadata and defines operations on metadata. Then two kinds of concurrency control policies and a kind of recover policy are provided in this paper.