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    • 5. 发明授权
    • Distributed database management system including logical database constituted by a group of physical databases
    • 分布式数据库管理系统,包括由一组物理数据库组成的逻辑数据库
    • US06457007B1
    • 2002-09-24
    • US08285534
    • 1994-08-05
    • Satoshi KikuchiHiromichi ItoKeiichi NakaneHisashi HashimotoEisaku Nishiyama
    • Satoshi KikuchiHiromichi ItoKeiichi NakaneHisashi HashimotoEisaku Nishiyama
    • G06F1730
    • G06F17/30566G06F17/30575
    • A distributed database management system includes a communication network, at least a terminal device including an application program execution unit connected to the communication network, a plurality of information processors connected to the communication network, a plurality of physical databases installed in at least one of the information processors, at least a logical database grouping a plurality of the, physical databases, the logical database being defined by logical database information stored in at least one of the terminal device and the plurality of information processors, at least a table stored in at least one of the physical databases, and a table location searching unit installed in at least one of the terminal device and the plurality of information processors, for searching a table stored in at least one of the physical databases based on the logical database information, the table being requested to access on a logical database, from the application program execution unit.
    • 分布式数据库管理系统包括通信网络,至少包括连接到通信网络的应用程序执行单元的终端设备,连接到通信网络的多个信息处理器,安装在至少一个 信息处理器,至少对多个所述物理数据库进行分组的逻辑数据库,所述逻辑数据库由存储在所述终端设备和所述多个信息处理器中的至少一个信息处理器中的至少一个存储的逻辑数据库信息定义,至少存储在一个表中 物理数据库之一以及安装在终端设备和多个信息处理器中的至少一个的表位置搜索单元,用于基于逻辑数据库信息搜索存储在至少一个物理数据库中的表格,表格 被请求访问逻辑数据库,从应用程序执行 单位。
    • 8. 发明授权
    • Cache control method for node apparatus
    • 节点设备的缓存控制方法
    • US07529885B2
    • 2009-05-05
    • US10663700
    • 2003-09-17
    • Shinji KimuraSatoshi OshimaHisashi Hashimoto
    • Shinji KimuraSatoshi OshimaHisashi Hashimoto
    • G06F13/16
    • G06F21/805G06F12/0813G06F12/0866G06F12/0888
    • The present invention provides a technique of controlling cache operation on a node device in a computer system that enables transmission and receipt of data between clients and a storage device via the node device. In accordance with a first control method, the data stored in the storage device includes attribute data, as to whether or not the data is cacheable. This application enables the node device to relay non-cacheable data without process of the cache. In accordance with a second control method, the node device encrypts the data when caching the data in the disk. In accordance with a third control method, non-cacheable data is transmitted and received directly without going through the node device. These applications enable the cache in the node device to be restricted, and thereby ensure security.
    • 本发明提供了一种在计算机系统中的节点设备上控制高速缓存操作的技术,其能够经由节点设备在客户机和存储设备之间传输和接收数据。 根据第一控制方法,存储在存储装置中的数据包括属性数据,数据是否可高速缓存。 该应用程序使得节点设备能够中继不可缓存的数据,而不需要缓存的进程。 根据第二控制方法,当缓存数据在盘中时,节点设备加密数据。 根据第三控制方法,直接发送和接收不可缓存的数据,而不经过节点设备。 这些应用使节点设备中的高速缓存受到限制,从而确保安全性。
    • 9. 发明授权
    • Method and apparatus for a data source device with shared storage for a plurality of clients
    • 一种用于多个客户机的具有共享存储器的数据源设备的方法和装置
    • US07051165B2
    • 2006-05-23
    • US10648252
    • 2003-08-27
    • Shinji KimuraSatoshi OshimaHisashi Hashimoto
    • Shinji KimuraSatoshi OshimaHisashi Hashimoto
    • G06F12/00
    • H04L63/08G06F3/0613G06F3/0632G06F3/0656G06F3/067H04L67/2842
    • The technique of the present invention enhances reading speed of data from a disk device in a computer system capable of transmission and reception of the data via a node device 200 between a client 100 and a storage device 300. A share volume PDc and specific volumes PDa and PDb are defined in the disk device on the storage device 300. Common data among respective clients and specific data corresponding to the individual client are stored in the share volume and specified volumes, respectively. Once respective clients request virtual volumes VDa and VDb to read the data, the storage device reads out the corresponding data from the share volume or the specific volume. This application avoids lowering the reading speed regardless of the concentration of accesses from a plurality of clients because most data can be read from the share volume.
    • 本发明的技术提高了能够经由客户端100和存储设备300之间的节点设备200发送和接收数据的计算机系统中的盘装置的数据读取速度。 共享卷PDc和特定卷PDa和PDb被定义在存储设备300上的磁盘设备中。 相应客户端中的公共数据和对应于单个客户端的特定数据分别存储在共享卷和指定的卷中。 一旦各个客户端请求虚拟卷VDa和VDb读取数据,存储设备将从共享卷或特定卷中读出相应的数据。 无论多个客户端的访问集中如何,这个应用程序都避免了读取速度的降低,因为大多数数据可以从共享卷读取。