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1. 发明专利

JP2000322294A METHOD AND DEVICE FOR DATA BASE MANAGEMENT 失效
公开(公告)号：JP2000322294A
公开(公告)日：2000-11-24
申请号：JP12691699
申请日：1999-05-07
申请人： HITACHI LTD
发明人： KODERA TAKASHI , ITO KAZUHIRO , BAN KAZUTAKE , KIRIHARA TAKASHI , GOSHO HIROYUKI , KUBO MITSUO , MIYATA SHINJI , OKUDA KIYOYUKI
IPC分类号： G06F12/00
摘要： PROBLEM TO BE SOLVED: To reduce the number of running instructions in a computer which are required for data conversion for data form adjustment between computers, to reduce the number of running instructions in the computer by performing data conversion for data form adjustment between computers and data form adjustment between data attributes by single conversion, and to reduce the number of running instructions in the computer which are required for conversion from a text of data operation statements from a client computer to a form of a computer where a data base exists. SOLUTION: When attributes of data are those indicating the data form which is handled in a client computer 102, conversion from the data form of the client computer to that of a computer 101 where a data base 109 exists is not performed. When these attributes are those indicating the data form which is handled in the computer 101, data conversion for data form adjustment between computers and that between data attributes are performed by one conversion processing. Data operation instruction statements are analyzed in the data form of the client computer 102 as they are.

2. 发明专利

JPH08314941A RETRIEVAL SYSTEM 失效
公开(公告)号：JPH08314941A
公开(公告)日：1996-11-29
申请号：JP11684095
申请日：1995-05-16
申请人： HITACHI LTD
发明人： KIRIHARA TAKASHI , KODERA TAKASHI , ABE ATSUSHI , KIMURA KOJI
IPC分类号： G06F17/30
摘要： PURPOSE: To reduce the load of a program and to release a restriction by means of the retrieval system of the retrieval exceeding a synchronous point by guaranteeing data which a retrieval position shows even after the synchronous point is acquired at the time of acquiring the synchronous point. CONSTITUTION: When a program (601) judges that update to a data base is required to be reflected in a real data base (605), the program (601) issues a synchronous point acquirement request. An effective retrieval exceeding the synchronous point changes the exclusion of data showing the retrieval position (604) to that effective until a UAP connection is terminated immediately before the synchronous point is acquired, and data which the retrieval position (604) shows is prevented from being opened at the time of acquiring the synchronous point. Data which the retrieval position (604) shows is guranteed by converting again exclusion to that effective till the synchronous point immediately after the synchronous point is acquired. Thus, data which the retrieval position (604) shows is guranteed and retireval is continued from data that the retrieval position (604) shows immediately after the synchronous point is acquired.

3. 发明专利

JP2007317100A Database updating method and information processor 审中-公开
标题翻译：数据库更新方法和信息处理程序
公开(公告)号：JP2007317100A
公开(公告)日：2007-12-06
申请号：JP2006148400
申请日：2006-05-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIRIHARA TAKASHI , KIMURA KOJI
IPC分类号： G06F12/00
摘要： PROBLEM TO BE SOLVED: To maintain integrity of records without performing a rollback when transaction is stopped by interruption.
SOLUTION: During execution of the transaction including updating process on a plurality of records in a database having a rollback function, if interruption such as hardware interruption caused by operation to a user interface, timer interruption based on setting by a user, and software interruption caused in response to an instruction given from an external device for stopping the transaction is received, a rollback is not carried out but updating process on the records during update is completed, and then, execution of updating process on the following record is stopped.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了保持记录的完整性，而不会在中断事务停止时执行回滚。解决方案：在执行包括对具有回滚功能的数据库中的多个记录上的更新处理的事务执行期间，如果由对用户界面的操作引起的诸如硬件中断的中断，基于用户设置的定时器中断，以及接收到响应于用于停止事务的外部设备的指令而引起的软件中断，不执行回滚，而是在更新期间对记录的更新处理完成，然后停止对下一记录的更新处理的执行。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2010198581A Database managing method, database managing system, and database managing program 审中-公开
标题翻译：数据库管理方法，数据库管理系统和数据库管理程序
公开(公告)号：JP2010198581A
公开(公告)日：2010-09-09
申请号：JP2009046115
申请日：2009-02-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIRIHARA TAKASHI , KIMURA KOJI , HARA NORIHIRO
IPC分类号： G06F12/00
摘要： PROBLEM TO BE SOLVED: To process transactions quickly even in a system with constrained resources. SOLUTION: When a database managing system equipped with a database for managing data executes transactions including update of the data, either a first transaction settling method for releasing the resources assigned to execute the transaction after completion of the transaction or a second transaction settling method for holding the assigned resources after completion of the transaction is executed, and the first transaction settling method or the second transaction settling method is selected based on the execution status of the database and executes the transaction based on the selected transaction settling method when receiving a request to execute the transaction including the update of the data. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：即使在资源有限的系统中也能快速处理事务。解决方案：当配备有用于管理数据的数据库的数据库管理系统执行包括数据更新的交易时，用于在交易完成之后释放分配用于执行交易的资源的第一交易结算方法或第二交易结算执行在完成交易之后保存分配的资源的方法，并且基于数据库的执行状态选择第一交易结算方法或第二交易结算方法，并且当接收到所述交易结算方法时，基于所选择的交易结算方法执行交易请求执行包括更新数据的事务。版权所有（C）2010，JPO＆INPIT

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