| 摘要 |
A tracking system ( 1 ) updates data to, and retrieves data from, learning management databases ( 10 ). Update data is received from course player servers ( 4 ), and requests are received from client systems. A common interface ( 21 ) interfaces with all players and clients, and it polls translation modules ( 22 ) for an appropriate and available module when a message is received. A tracking engine ( 20 ) manages threads and a queue for both synchronous and asynchronous communication. The queue is linked with database interfaces ( 24 ), which are Schema Access Objects (SAOs). Each SAO is pooled as a set of instances, activated and managed by a pooling manager.
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