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1. 发明授权

US5513112A Database system 失效
标题翻译：数据库系统
公开(公告)号：US5513112A
公开(公告)日：1996-04-30
申请号：US132306
申请日：1993-10-06
申请人： William J. Herring , MacKenny L. Trim
发明人： William J. Herring , MacKenny L. Trim
IPC分类号： G06F11/14 , G07B17/00 , G07B17/02
CPC分类号： G07B17/0008 , G06F11/1471 , G07B17/00435 , G07B2017/00096 , G07B2017/00137 , G07B2017/00161 , G07B2017/00427
摘要： A database system for maintaining accounting records in relation to usage of postage meters is disclosed. The database system is provided with two computers, both of which provide access to the system from remote postage meters via a telephone network, and each computer maintains a separate database. One computer acts as primary and handles all transactions, received either direct or via the other secondary computer, and maintains a primary database. For each transaction, the primary computer creates an archived record in a buffer and periodically when the buffer is full sends an archive record to the secondary computer for use by the secondary computer to update the secondary database. In addition for critical transactions such as a postage meter recredit transaction, the primary computer also creates a transaction log and sends it to the secondary computer for storing in a FILO buffer. The primary computer lastly authorises credit to the postage meter. In the event the archived record is not sent to the secondary computer due to a fault in the primary computer, the secondary computer utilises the transaction log to update the secondary database with critical accounting data.
摘要翻译：公开了一种用于维护与邮资计费表使用有关的会计记录的数据库系统。该数据库系统具有两台计算机，这两台计算机都通过电话网络提供从远程邮资计费器访问系统，并且每台计算机维护单独的数据库。一台计算机充当主要功能，处理所有事务，直接或通过其他辅助计算机接收，并维护主数据库。对于每个事务，主计算机在缓冲区中创建归档记录，并在缓冲区已满时定期发送归档记录到辅助计算机以供辅助计算机更新辅助数据库。此外，对于关键交易（如邮资汇款回收事务），主计算机还会创建一个事务日志并将其发送到辅助计算机以存储在FILO缓冲区中。主计算机最后授权邮资计费。如果归档记录由于主计算机出现故障而未发送到辅助计算机，则辅助计算机利用事务日志来更新次要数据库，并使用关键会计数据。

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