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11. 发明专利

JP2000090123A DATA BASE MANAGEMENT METHOD AND SYSTEM 失效
公开(公告)号：JP2000090123A
公开(公告)日：2000-03-31
申请号：JP28911999
申请日：1999-10-12
申请人： HITACHI LTD
发明人： TSUCHIDA MASASHI , MASAI KAZUO , TORII SHUNICHI
IPC分类号： G06F15/173 , G06F12/00 , G06F15/16 , G06F15/177 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To delete the data storing areas storing small quantity of data and to reduce the unbalance of load to every data storing area by allocating the key range corresponding to the data storing area to be deleted to another data storing area. SOLUTION: An IOS(input/output server) 70 decides the number of areas to be divided of a disk 80 for management of it according to a load pattern that is designated by a user. The ratio of 1:4:1:8 is decided among the FES(front end server), BES(back end server). ISO and disk respectively. In an initial data loading mode, however, the said ratio is changed into 1:1:1:8. When the load of a BES 731 is increased and the unbalance of load is detected, the BES 732, 733 and 734 are successively added and the said ratio is changed into 1:4:1:8. When the load is light and the utility rates of BES 733 and 734 are set at

12. 发明专利

JPH09293006A METHOD FOR DIVIDING PARALLEL DATABASE AND CONTROL SYSTEM THEREOF 失效
公开(公告)号：JPH09293006A
公开(公告)日：1997-11-11
申请号：JP10681596
申请日：1996-04-26
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： KASAO HIDEAKI , TODA KEISUKE , YAMAGUCHI KOTA , MASAI KAZUO , HIROHATA KIYOMI
IPC分类号： G06F12/00 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To provide a parallel database dividing method and its control system where work with the division number change of a database is efficiently executed in a parallel data control system for dividing a database. SOLUTION: An access request to the databse is generated from a job program, the request is judged to be storage or retrieval at first, the control number of an external storage device for storing a record through the use of a hash function at the time of storage and the record is stored in the external storage device in accordance with the control number. At the time of retrieval, the whole divided external storage devices are retrieved in parallel without using the hash function.

13. 发明专利

JPS62284455A DISTRIBUTED INTERACTION PROCESSING SYSTEM 失效
公开(公告)号：JPS62284455A
公开(公告)日：1987-12-10
申请号：JP12572686
申请日：1986-06-02
申请人： HITACHI LTD
发明人： MASAI KAZUO , YAMADA KIMITOSHI , KOJIMA TOMIHIKO , KIMURA IKUO
IPC分类号： G06F15/16 , G06F9/46 , G06F9/48 , G06F9/50 , G06F15/177
摘要： PURPOSE:To reduce the load of host computers by arranging server processes corresponding to requests in each host computer to transfer a request analyzed by a work station with a high function to a specific server in a specific host computer. CONSTITUTION:The high function work stations (IWS) 1 are connected to the host computers 2 through communication lines 3. Each IWS 1 is provided with several processes 4 for processing user's requests and a communication control part 5 for controlling a circuit 3. On the other hand, each host computer 2 is provided with a communication control space 6 for controlling the lines 3 and several server processes 7 for executing processing corresponding to respective requests. The servers 7 are sorted in accordance with the processing requests from the processes 4 in the IWS 1 and a request from each process 4 is processed by a specific server 7. Consequently, it is unnecessary for the host computer to analyze which server process is to be used for request analysis in the IWS 1, so that the load of the host computers can be reduced.

14. 发明专利

JPS6148034A Dynamic size changing system of hashing table 失效
标题翻译：冲击表动态尺寸变化系统
公开(公告)号：JPS6148034A
公开(公告)日：1986-03-08
申请号：JP16933884
申请日：1984-08-15
申请人： Hitachi Ltd
发明人： MASAI KAZUO
IPC分类号： G06F17/30
摘要： PURPOSE: To obtain a retrieval method by which even if the number of a symbol is changed, a retrieval efficiency is not lowered, and an usually and unnecessarily large hashing table is not required by changing dynamically the size of a hashing table in accordance with the number of a symbol.
CONSTITUTION: In a table retrieval, the name of a command symbol is given to a hashing function 18, an entry in a hashing table 15 is obtained and from this entry, a symbol name is searched to obtain a suitable value. If the collision of the symbol name is generated and the hashing values overlaps, the processing is doned by using an overflow table 16. When an operator of TSS terminal enters LOGON command and begins TSS session, an initializing routine 6 begins to operate, reads a command symbol from a data set 8 for profiling a command and extends it to a symbol table.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了获得即使符号数改变的检索方法，也不会降低检索效率，并且通过动态地改变哈希表的大小，不需要通常且不必要的大哈希表，一个符号的数字。构成：在表检索中，命令符号的名称被赋予散列函数18，获得散列表15中的条目，并且从该条目搜索符号名称以获得合适的值。如果生成符号名称的冲突并且哈希值重叠，则使用溢出表16来执行处理。当TSS终端的运算符进入LOGON命令并开始TSS会话时，初始化例程6开始运行，读取来自数据集8的命令符号，用于分析命令并将其扩展到符号表。

15. 发明专利

JP2000250993A INFORMATION MANAGEMENT SYSTEM 失效
公开(公告)号：JP2000250993A
公开(公告)日：2000-09-14
申请号：JP5487999
申请日：1999-03-03
申请人： HITACHI LTD
发明人： ITO YUKIYASU , MASAI KAZUO
IPC分类号： G07G1/12 , G06Q10/00 , G06Q30/06 , G06Q50/00 , G06Q50/10 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To automatically store money transaction information at a safe place for storage and to simultaneously and safely manage it from loss, forge fabrication, etc. SOLUTION: When transaction is performed at a retail store by a customer, transaction information is processed by a processor 101 for retail store, transmitted to a transaction information managing device 401 via a public line network 301, etc., stored and managed by every customer. The stored and managed transaction information by every customer is collated, analyzed and processed by giving an instruction from a processor 201 for customer by the customer. Since the transaction information is directly transmitted from the processor 101 for retail store to the transaction information managing device 401 and stored there, the customer is protected from a danger of loss, stealing, forge, fabrication of a paper receipt and labor of management is eliminated. The stored transaction information is collated, analyzed and processed from the processor 201 for customer.

16. 发明专利

JP2000090124A DATA BASE MANAGEMENT METHOD AND SYSTEM 失效
公开(公告)号：JP2000090124A
公开(公告)日：2000-03-31
申请号：JP28917199
申请日：1999-10-12
申请人： HITACHI LTD
发明人： TSUCHIDA MASASHI , MASAI KAZUO , TORII SHUNICHI
IPC分类号： G06F15/173 , G06F12/00 , G06F15/16 , G06F15/177 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To reduce the unbalance of load in every data storing area by adding a data storing area to a key range where a large quantity of data are allocated. SOLUTION: The ratio of 1:4:1:8 is decided among the EFS(front end server), BES(back end server), IOS (input/output server) and disk respectively. In an initial data loading mode, however, just a single unit of both FES and BES is enough and the said ratio is changed into 1:1:1:8. When the load of a BES 731 is increased and the unbalance of load is detected, a BES 732 is added. As the existing number of divisions is set at 4, two divisions are made to correspond to the BES 731 and 732 respectively. Thereby, the BES 732 has the directory information on the data bases to be stored in the disks 811 to 822 of existing divisions #1 and #2. Meanwhile, the BES 732 has the directory information on the data bases to be stored in the disks 831 to 842 of existing divisions #3 and #4. Thus, the ratio of 1:2:1:8 is set among the FES, BES, IOS and disk respectively.

17. 发明专利

JPH10269248A METHOD FOR RANDOM EXTRACTION OF DATA IN DATA BASE PROCESSING SYSTEM, AND DATA BASE PROCESSING SYSTEM BASED UPON THE SAME 失效
公开(公告)号：JPH10269248A
公开(公告)日：1998-10-09
申请号：JP2649398
申请日：1998-01-23
申请人： HITACHI LTD
发明人： USHIJIMA KAZUTOMO , FUJIWARA SHINJI , MASAI KAZUO , TAKAHASHI YORI , NISHIZAWA ITARU
IPC分类号： G06F17/30
摘要： PROBLEM TO BE SOLVED: To improve the throughput of the random extracting processing in a data base processing system. SOLUTION: It is made possible to issue an inquiry including random extraction in an inquiry issuing process 2, and application order between the random extraction and other inquiries is changed in an inquiry converting process 8 in consideration of extraction units of the random extraction. Further, random access to a secondary storage device is reduced in a record managing process 4. Thus, the inquiry including the random extraction can be issued and inquiry conversion is performed in consideration of the extraction units to enable application to an inquiry including a totalizing process and further improve the efficiency of inquiries over a wide range. The random access to the secondary storage device is reduced to be able to improve the efficiency more.

18. 发明专利

JPH04102141A DATA ACCESS RIGHT CONTROL METHOD 失效
公开(公告)号：JPH04102141A
公开(公告)日：1992-04-03
申请号：JP21955190
申请日：1990-08-21
申请人： HITACHI LTD
发明人： YANASE KOJI , MASAI KAZUO
IPC分类号： G06F12/14 , G06F12/00 , G06F21/24
摘要： PURPOSE:To reduce overhead by omitting a right check in the case of executing a user program as much as possible by using two relations. CONSTITUTION:A relation A stores a ccommand name, resource name and the relation of correspondence between necessity / unnecessity for checking the access right in the case of execution in the order of execution, and a relation B holds data access right information owned by a user for the unit of release. By referring to the relation B when preparing a user program 7, it is decided concerning the respective operation contents of the user program 7 whether the right check is required in the execution or not, and the information is registered on the relation A. Namely, when the relevant data access right is owned, the check is not required and when the right is not owned, the check is required. Thus, it is not necessary to check each time whether each data operating language owns the right to the objective data or not, and the overhead is reduced by a secrecy protecting function.

19. 发明专利

JPS63261437A FAULT RECOVERY SYSTEM FOR COMPOSITE SUBSYSTEM TYPE ON-LINE SYSTEM 失效
公开(公告)号：JPS63261437A
公开(公告)日：1988-10-28
申请号：JP9510387
申请日：1987-04-20
申请人： HITACHI LTD
发明人： MASAI KAZUO , WAKAYAMA SATORU , YAMAMOTO AKIJI
IPC分类号： G06F15/00 , G06F11/14 , G06F12/00
摘要： PURPOSE:To normally execute the processing of another system even when a subsystem is partially failed by providing the titled system with a journal receding file for receding a journal to be required at the time of fault recovery every transaction. CONSTITUTION:A journal outputted from an operating transaction every check point time is receded in the journal receding file RF 4. When the subsystem is partially failed, a controller 1 reads out all journals after the check point time and after and adds a journal necessary for the RF 4. The transaction is recovered by using information included in the RF 4. Although information in the operating subsystem is immediately recovered, unraised information is recovered with a delay. However, the transaction can be recovered at the time of its rise. Thus, the processing of other system can be normally executed even if the subsystem is partially failed.

20. 发明专利

JP2001175628A DATABASE MANAGING METHOD 失效
公开(公告)号：JP2001175628A
公开(公告)日：2001-06-29
申请号：JP2000347713
申请日：2000-11-15
申请人： HITACHI LTD
发明人： TSUCHIDA MASASHI , MASAI KAZUO , TORII SHUNICHI
IPC分类号： G06F17/30 , G06F15/177
摘要： PROBLEM TO BE SOLVED: To provide a database division managing method and a parallel database system which can obtain expected parallelism and actualize fast querying. SOLUTION: The parallel database system 1 is constituted by connecting FES 75, BES 73, IOS 70, and a disk 80. The number of processors of FES 75, BES 73, and IOS 70, and the number of disks of the disk 80 and its division number are determined corresponding to a load pattern. For example, FES:BES: IOS:disk=1:4:1:8. Further, BES is increased from one up to four according to load variation to obtain scalable system constitution. When BES is increased, data are not moved and only management information is moved. Consequently, a high-speed querying processing which brings out expected parallelism is actualized. The scalability of the system is realized.

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