This is not required for rollback of failed transactions but it is useful for updating the database management system in the event of a database failure, so some transaction-processing systems provide it.
If some of the operations are completed but errors occur when the others are attempted, the transaction-processing system "rolls back" all of the operations of the transaction (including the successful ones), thereby erasing all traces of the transaction and restoring the system to the consistent, known state that it was in before processing of the transaction began.
Before June 2015, the Regional Service Centre at Entebbe will transfer the transaction-processing components of financial and human resource services and provide those services to all of its client missions while conducting complementary activities to improve service delivery.
However, proprietary transaction-processing environments such as IBM's CICS are still very popular, although CICS has evolved to include open industry standards as well.
然而,专利事务处理环境中,例如IBM的CICS还十分流行,虽然CICS也已经升级到包含行业标准了。
Transaction-processing systems ensure database integrity by recording intermediate states of the database as it is modified, then using these records to restore the database to a known state if a transaction cannot be committed.
These include desktop computers, networks, databases, office automation software, messaging software, transaction-processing applications, Internet access, shared group-work tools, data replication and sophisticated telecommunication systems.
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