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1. 发明专利

JP2000276306A NETWORK CONNECTION DISK DEVICE 失效
公开(公告)号：JP2000276306A
公开(公告)日：2000-10-06
申请号：JP7909099
申请日：1999-03-24
申请人： HITACHI LTD
发明人： WATANABE NAOKI , TOMITA AKI , TAKAMOTO YOSHIFUMI , ODAWARA HIROAKI , SAGAWA NOBUTOSHI , SUGIE MAMORU , INOHARA SHIGEKAZU
IPC分类号： G06F15/173 , G06F3/06 , G06F12/14 , G06F21/24 , G11B20/10
摘要： PROBLEM TO BE SOLVED: To obtain a disk device capable of constructing a system having high secrecy and high throughput in the case of constructing an information processing system by using servers, clients and network connection disk devices. SOLUTION: Each network connection disk device 105 has a 1st interface to be connected to a 1st network and a 2nd interface to be connected to a 2nd network. Data communication between a client 101 and a server 102 connected to the 1st network but not connected to the 2nd network is executed through the 1st network and data communication between other network connection disk devices connected to the 1st and 2nd networks is executed through the 2nd network.

2. 发明专利

JP2000099332A REMOTE PROCEDURE CALL OPTIMIZATION METHOD AND PROGRAM EXECUTION METHOD USING THE OPTIMIZATION METHOD 失效
公开(公告)号：JP2000099332A
公开(公告)日：2000-04-07
申请号：JP27089098
申请日：1998-09-25
申请人： HITACHI LTD
发明人： INOHARA SHIGEKAZU , FUJIWARA SHINJI , MASUOKA YOSHIMASA , SAGAWA NOBUTOSHI
IPC分类号： G06F15/16 , G06F9/06 , G06F9/44 , G06F9/45 , G06F9/46
摘要： PROBLEM TO BE SOLVED: To fast execute a series of remote procedure call between a client and a server. SOLUTION: An RPC optimizer 101 uses an IDL source code 103 and client source codes 102, 102'... as inputs. The optimizer 101 defines a series of remote procedure groups which are executed by a client to an additional server source code 107 as a new remote procedure and also outputs a new IDL source code 106 to which a remote procedure interface is added and the new client source codes 105, 105'... which are changed to use the remote procedures. Thus, a series of remote procedure groups to be executed by a client are collected together in a new remote procedure and accordingly plural times of remote procedures of communication is decreased down to once. As a result, the fast communication is possible between a client and a server.

3. 发明专利

JPH11134227A FILE FORMAT CONVERTING METHOD, AND FILE SYSTEM, INFORMATION SYSTEM, AND ELECTRONIC COMMERCE TRANSACTION SYSTEM USING THE METHOD 失效
公开(公告)号：JPH11134227A
公开(公告)日：1999-05-21
申请号：JP29376597
申请日：1997-10-27
申请人： HITACHI LTD
发明人： INOHARA SHIGEKAZU , KAGIMASA TOYOHIKO , NODA FUMIO , MASUOKA YOSHIMASA , BIN KIYOUKA
IPC分类号： G06F12/00 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To enable a user to make good use of the latest conversion destination file all the time without specifying a conversion source file and the timing of format conversion by holding the correspondence relation between the conversion source file and conversion destination files, and conversion programs in the file system. SOLUTION: In a conversion table 120, a group of the conversion source file 130 and conversion destination files 131, 131'... is made to correspond to the conversion programs 103, 103'... Then the correspondence relation between the conversion source file 130 and conversion destination files 131, 131'..., and the conversion programs 103, 103'... is held in the file system to eliminate the need to indicate which file is converted to which file by the user at each time. The operation that an application performs without fail when reading and writing a file is used as a trigger for format conversion. Consequently, the operation of the application is known in detail through the file system and corresponding operation can be done.

4. 发明专利

JPH10320337A DISTRIBUTED DATA MANAGEMENT METHOD 失效
公开(公告)号：JPH10320337A
公开(公告)日：1998-12-04
申请号：JP12524797
申请日：1997-05-15
申请人： HITACHI LTD
发明人： INOHARA SHIGEKAZU , KAGIMASA TOYOHIKO , MASUOKA YOSHIMASA , NODA FUMIO , BIN KIYOUKA
IPC分类号： G06F13/00 , G06F12/00 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To select a communication line that performs fast communication and to shorten the time from sending a request to a client until the request is met by using the communication history of other server which has a possibility of having needed data and requesting a selected server to send the needed data from the other server. SOLUTION: When a client 204 sends a request 120 that includes a uniform resource locator(URL) to a server 205 and requests acquisition of URL content, a request processing part 101 retrieves a home page cache 104 returns the URL content with answerback to the client 204. Also, if the URL content does not exist in the cache 104, the server 205 refers to an access strategic table 105 which maintains a communication history, decides a server 205', 205",... to which the request should be sent and transfers a request 120 according to a request 122. The server 205 sends URL content that is acquired through an answer 123 from the server to which the request 120 is sent as answer 121 to the client 204.

5. 发明专利

JP2001350656A INTEGRATED ACCESS METHOD FOR DIFFERENT DATA SOURCES 失效
公开(公告)号：JP2001350656A
公开(公告)日：2001-12-21
申请号：JP2000174201
申请日：2000-06-06
申请人： HITACHI LTD
发明人： INOHARA SHIGEKAZU , NISHIZAWA ITARU , SHIMIZU AKIRA
IPC分类号： G06F15/16 , G06F12/00 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To integrate not only the data stored in a relational database management system but also the data stored in data sources unable to efficiently execute an inquiry such as a legacy AP(application program) and a tertiary memory and to realize a high-speed inquiry. SOLUTION: A distributed index for the data source is generated in a database hub in advance, and a distributed index application section deforms and analyzes the query by using the distributed index. The high-speed inquiry is realized for the data stored in the data sources unable to efficiently execute the inquiry.

6. 发明专利

JP2001109758A VIRTUAL TABLE INTERFACE, AND SYSTEM AND METHOD FOR PROCESSING INQUIRY USING THIS INTERFACE 失效
公开(公告)号：JP2001109758A
公开(公告)日：2001-04-20
申请号：JP28516499
申请日：1999-10-06
申请人： HITACHI LTD
发明人： NISHIZAWA ITARU , INOHARA SHIGEKAZU , SAGAWA NOBUTOSHI , SHIMIZU AKIRA
IPC分类号： G06F3/048 , G06F3/00 , G06F12/00 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To provide a data processing system that is a foundation to construct an information system capable of flexibly corresponding to a change of access object data and further to provide a mechanism which improves the performance of the data processing system needing distributed inquiry processing. SOLUTION: The data processing system which receives an inquiry from an application is provided internally with a virtual table capable of multiple mapping to a plurality of databases (1). A partial replica being the copy of a part of data on the virtual table is prepared, and all or a part of the inquiry is processed by using the partial replica (2). Also, about an inquiry unit in which the partial replica can not be used, appropriate distributed join system selection and optimization that pushes down processing to a real database as much as possible are used.

7. 发明专利

JP2000268004A OPTIMALLY DISTRIBUTE-ARRANGING METHOD OF OBJECT IN DISTRIBUTED COMPUTER ENVIRONMENT 失效
公开(公告)号：JP2000268004A
公开(公告)日：2000-09-29
申请号：JP7310899
申请日：1999-03-18
申请人： HITACHI LTD
发明人： IMAKI TSUNEYUKI , SAGAWA NOBUTOSHI , INOHARA SHIGEKAZU , MASHIERU FUREDERIKO
IPC分类号： G06F15/16 , G06F9/46 , G06F15/177
摘要： PROBLEM TO BE SOLVED: To reduce a communication cost by allowing a distribute arrangement demon to select a computer starting from an inter-object depending relation and an inter computer connecting relation to arrange objects. SOLUTION: A distribute arrangement demon 211 receives a request to an object executable on a computer under the control of the demon 211 from a client 115 and when the object has not arranged yet, selects the computer for arranging each object by referring to a computer connection relation 121 being communication cost information between computers under control, an inter-object depending relation 122 being communication quantity information between the objects of them, and load information on each computer 206, 207, 101 to 103 reported from processing demons 110 to 114. Next, objects 116 to 120 are arranged in each demon 110 to 114 by requesting a received request to a processing demon on the selected computer.

8. 发明专利

JPH11219312A DATA CACHE METHOD AND DATA ACCESS METHOD 失效
公开(公告)号：JPH11219312A
公开(公告)日：1999-08-10
申请号：JP2292798
申请日：1998-02-04
申请人： HITACHI LTD
发明人： FUJIWARA SHINJI , NISHIZAWA ITARU , USHIJIMA KAZUTOMO , INOHARA SHIGEKAZU
IPC分类号： G06F12/00 , G06F5/00 , G06F13/00
摘要： PROBLEM TO BE SOLVED: To designate the precision of data and to efficiently access a large size data object. SOLUTION: A data access request containing a requested precision of data is issued from a client 1. A cache device 2 judges whether the designated data exists in a cache or not. When the designated data exists, compression attribute of the cached data is referred to. When it satisfies the precision designated in the data access request, the compressed data is returned. When it does to exist in the cache or precision is not satisfied, data received from a data supply source is compressed in a range satisfying the designated precision, it is registered in the cache and is returned to the client 1.

9. 发明专利

JPH1196102A SERVER DECENTRALIZED MANAGING METHOD 失效
公开(公告)号：JPH1196102A
公开(公告)日：1999-04-09
申请号：JP25959197
申请日：1997-09-25
申请人： HITACHI LTD
发明人： INOHARA SHIGEKAZU , MASUOKA YOSHIMASA , BIN KIYOUKA , NODA FUMIO
IPC分类号： G06F15/16 , G06F12/00 , G06F13/00 , G06F15/177 , H04L12/24 , H04L29/08
摘要： PROBLEM TO BE SOLVED: To save the manager's time and labor to place servers in associative operation like a proxy of WWW by making the manager have a server state propagation protocol for decentralizing and managing server operation information. SOLUTION: In this method, the manager has the 'server state propagation protocol' for decentralizing and managing the server operation information (list of servers 10 to 10" in operation). The respective servers 10 to 10" dynamically structure multicast layers of the server operation information by the mutual assistance of a server group starting with the names of a small number of other servers given by the administrator. The multicast layers are groups of a tree structure that the server group constitutes and each group consists of several to tens of servers. As some of the servers are stopped and restarted, the multicast layers are dynamically reconstituted. This server state propagation protocol reduces the manager's time and labor to place the servers 10 to 10" in associative operation.

10. 发明专利

JP2010140502A Data warehouse system and query processing method therefor 有权
标题翻译：数据仓库系统及其查询处理方法
公开(公告)号：JP2010140502A
公开(公告)日：2010-06-24
申请号：JP2010023714
申请日：2010-02-05
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NISHIZAWA ITARU , FUJIWARA SHINJI , USHIJIMA KAZUTOMO , INOHARA SHIGEKAZU
IPC分类号： G06F12/00
摘要： PROBLEM TO BE SOLVED: To provide a practical data warehouse using a network. SOLUTION: Data collection means 101 and 102 for forming and managing a replica of server data for clients 103 and 104 are connected to a network 113. The data collection means holds a data request condition given from a user through the clients, and negotiates with, for example, servers 114 and 122 for supplying data based on resources usable by the data collection means such as a storage device, a CPU or the like, whereby the data range and quality of the replica to be formed are adjusted. In query processing, queries from the clients are partially or entirely processed by use of a replica 123 formed within the data collection means. A query which is not processed by use of the replica is transferred to a server. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：使用网络提供实用的数据仓库。解决方案：用于形成和管理客户端103和104的服务器数据的副本的数据收集装置101和102连接到网络113.数据收集装置保存通过客户端从用户给出的数据请求条件，以及与例如服务器114和122协商，用于基于诸如存储设备，CPU等的数据收集装置可用的资源来提供数据，从而调整要形成的副本的数据范围和质量。在查询处理中，通过使用在数据收集装置内形成的副本123部分地或完全地处理来自客户端的查询。未通过使用副本处理的查询被传送到服务器。版权所有（C）2010，JPO＆INPIT

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