Data Warehouse Maintenance Under Concurrent Schema and Data Updates

摘要

Data warehouses (DW) are built by gathering information from several information sources and integrating it into one repository customized to users needs. Recently, proposed view maintenance algorithms tackle the problem of (concurrent) data updates happening at different autonomous ISs, whereas the EVE system addresses the maintenance of a data warehouse after schema changes of ISs. The concurrency of schema changes and data updates performed by different Iss still remains an unexplored problem, however.