| 摘要 |
<p>A clinical trial data management system (1) receives clinical trial data in Case Record Forms (CRFs), which are scanned by a document management system (3) to provide an indexed image file. Client workstations and the document management system (3) communicate via a local area network (LAN) 4 with clinical data management application servers (5) in turn linked with database servers (7) which manage a clinical data database (8) in a storage area network (SAN). There is a separate path for work flow data, namely from the document management system and workstations (3) via LANs (4, 6, 9) to a cluster of work flow engine application and database servers 10. The work flow servers (10) perform work flow processing and manage work flow databases (11) in a second SAN. The work servers (10) execute a snapshot process comprising copying a portion of each of the clinical response data and of the work flow data from their respective databases (8, 11) to a temporary file in which said data is merged, and automatically generate reports exclusively from the temporary file without accesses to the clinical data or work flow databases (8, 11). The data is copied according to dynamically-set criteria, including metric requirements, and the data is copied from the full databases (8, 11) irrespective of data age. The snapshot process is executed only be applications on the work flow servers (10).</p> |
