发明授权
- 专利标题： System for optimally processing a transaction and a query to the same database concurrently
- 专利标题（中）： 用于同时处理事务和查询到同一个数据库的系统
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申请号： US406265申请日： 1995-03-17
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公开(公告)号： US5758149A公开(公告)日： 1998-05-26
- 发明人: Michael J. Bierma , Sheng-te Chiang , Thomas P. Cooper , James A. Elke , Katsuhiko Kihara , John R. Jordan , Lester Y. Lee , Lee-Chin Liu , James R. Mettling , James M. Plasek , Ralph E. Sipple , Jennifer J. Smith , Ronald Q. Smith , Rajeev P. Tandon
- 申请人： Michael J. Bierma , Sheng-te Chiang , Thomas P. Cooper , James A. Elke , Katsuhiko Kihara , John R. Jordan , Lester Y. Lee , Lee-Chin Liu , James R. Mettling , James M. Plasek , Ralph E. Sipple , Jennifer J. Smith , Ronald Q. Smith , Rajeev P. Tandon
- 申请人地址： PA Blue Bell
- 专利权人： Unisys Corporation
- 当前专利权人： Unisys Corporation
- 当前专利权人地址： PA Blue Bell
- 主分类号： G06F17/30
- IPC分类号： G06F17/30 ; G06F17/00 ; G06F15/00
摘要：
A system for concurrent processing of queries and transactions against a shared database. The system includes multiple processors wherein a processor is available for processing queries and another processor is available for concurrently processing transactions. A query buffer is established for performing the query search while the data accessed by transactions is available in a database cache. Control logic in a database management system distinguishes between transactions and queries and initiates file-read control for reading the file containing the database. File-read control contains logic for logical sequential reading and logical non-sequential reading of the file. Control structures provide a means for control over the load that the query is allowed to place on the system.
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