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    • 2. 发明授权
    • Parallel database processing system and retrieval method using secondary
key
    • 并行数据库处理系统和使用次级密钥的检索方法
    • US5515531A
    • 1996-05-07
    • US69193
    • 1993-05-28
    • Shinji FujiwaraMitsuru NagasakaYooichi Shintani
    • Shinji FujiwaraMitsuru NagasakaYooichi Shintani
    • G06F12/00G06F17/30
    • G06F17/30321G06F17/30433Y10S707/99933
    • A parallel database processing system a global database processing unit, a plurality of local database processing units, and a network interconnecting the global database processing unit and a plurality of local database processing units, wherein one table containing a number of records is partitioned into local tables, each local table being provided in a corresponding one of the local database processing units, secondary key indexes representing correspondence between the values of secondary keys for all records in the table and access information to the records corresponding to the secondary keys, are partitioned on the basis of the values into local secondary key indexes, each set of the local secondary key indexes being provided in a corresponding one of the local database processing units, and an identifying unit is provided in the global database processing unit, the identifying unit responsive to a retrieval request with the secondary key identifying the local database processing unit having the local secondary key index corresponding to the secondary key. At the global database processing unit, the retrieval request with the secondary key is received, the identifying unit identifies the local database processing unit having the local secondary key index corresponding to the secondary key, and the retrieval request with the secondary key is transferred to the identified local database processing unit. At the identified local database processing unit, its own local secondary key indexes are referred to obtain access information corresponding to the transferred retrieval request with the secondary key, and the retrieval request with the secondary key is processed by using the access information so that the local table corresponding to the retrieval request with the secondary key is accessed.
    • 并行数据库处理系统,全局数据库处理单元,多个本地数据库处理单元,以及互连全球数据库处理单元和多个本地数据库处理单元的网络,其中包含多个记录的一个表被划分为本地表 每个本地表被提供在本地数据库处理单元中的对应的一个中,表示对于表中的所有记录的辅助键的值之间的对应关系的次要密钥索引以及对应于次要密钥的记录的访问信息被划分在 将所述值作为本地二次密钥索引的基础,在本地数据库处理单元中相应的一个本地数据库处理单元中提供每组本地辅助密钥索引,并且在全局数据库处理单元中提供识别单元,所述识别单元响应于 检索请求与辅助键标识本地数据库进程 具有对应于次要密钥的本地次要密钥索引的单元。 在全局数据库处理单元处,接收到具有辅助密钥的检索请求,识别单元识别具有与次密钥对应的本地次要密钥索引的本地数据库处理单元,并且将具有辅助密钥的检索请求传送到 识别本地数据库处理单元。 在所识别的本地数据库处理单元,其自身的本地次要密钥索引被引用以获得与所传送的检索请求相对应的与辅助密钥相关的访问信息,并且通过使用访问信息来处理具有辅助密钥的检索请求,使得本地 访问与辅助密钥的检索请求对应的表。
    • 4. 发明授权
    • Buffer storage control system
    • 缓冲存储控制系统
    • US4618926A
    • 1986-10-21
    • US518698
    • 1983-07-29
    • Kanji KuboKenichi WadaYooichi Shintani
    • Kanji KuboKenichi WadaYooichi Shintani
    • G06F9/38G06F12/08G06F12/10G11C9/06
    • G06F12/0846G06F12/0848
    • In a storage hierarchy system, a part of data stored in a main storage in held as a copy by a buffer storage of a smaller capacity and higher speed than the main storage. A processor fetches data from the buffer storage or stores data in the buffer storage at a high speed. A buffer storage control system includes a first buffer directory and a second buffer directory. The first buffer directory and the buffer storage are accessed by an address for a fetch request, while the second buffer directory and the buffer storage are accessed by an address for store request, whereby competition for the access to the buffer storage between the fetch and store operations is reduced.
    • 在存储分层系统中,存储在主存储器中的数据的一部分被保存为比主存储器更小容量和更高速度的缓冲存储器作为副本。 处理器从缓冲存储器中取出数据或以高速将数据存储在缓冲存储器中。 缓冲存储控制系统包括第一缓冲目录和第二缓冲目录。 第一缓冲器目录和缓冲存储器由用于获取请求的地址访问,而第二缓冲器目录和缓冲存储器被存储请求的地址访问,由此在获取和存储之间访问缓冲存储器的竞争 操作减少。
    • 5. 发明授权
    • Pipelined data processing system
    • 流水线数据处理系统
    • US4541047A
    • 1985-09-10
    • US490166
    • 1983-04-29
    • Kenichi WadaYooichi ShintaniTsuguo ShimizuAkira Yamaoka
    • Kenichi WadaYooichi ShintaniTsuguo ShimizuAkira Yamaoka
    • G06F9/38G06F9/48
    • G06F9/3863
    • A data processing system for executing an instruction in a plurality of stages in a pipeline mode comprises a main operation unit for operating all instructions to be executed by the data processing unit, a first group of general purpose registers for storing the operation results of the main operation unit, a pre-operation unit for operating a portion of instructions which frequently appear and which can be operated with a small number of circuit components, a second group of general purpose registers for storing the operation results of the pre-operation unit, and control means for storing the operation result of the pre-operation unit into the second general purpose register at least one operation stage earlier than the storing of the operation result of the main operation unit into the first general purpose register and storing the contents of the second general purpose registers into the first general purpose registers when an interruption occurs.
    • 一种用于在流水线模式中执行多级的指令的数据处理系统包括用于操作由数据处理单元执行的所有指令的主操作单元,用于存储主程序的操作结果的第一组通用寄存器 操作单元,用于操作经常出现并且可以用少量电路组件操作的指令的一部分的预操作单元,用于存储预操作单元的操作结果的第二组通用寄存器,以及 控制装置,用于将预操作单元的操作结果存储在第二通用寄存器中,比将主操作单元的操作结果存储到第一通用寄存器中的至少一个操作阶段存储第二通用寄存器的内容 当发生中断时,通用寄存器进入第一个通用寄存器。
    • 10. 发明授权
    • Data processor for parallelly executing conflicting instructions
    • 用于并行执行冲突指令的数据处理器
    • US4928226A
    • 1990-05-22
    • US124839
    • 1987-11-24
    • Eiki KamadaYooichi ShintaniKazunori KuriyamaTohru ShonaiKiyoshi Inoue
    • Eiki KamadaYooichi ShintaniKazunori KuriyamaTohru ShonaiKiyoshi Inoue
    • G06F9/38
    • G06F9/3836
    • A data processor includes an instruction detection unit for detecting that a succeeding instruction writes a read-out operand into a general register group without subjecting it to arithmetic or logical operation, in accordance with instruction decode informations provided by an instruction hold unit; a conflict detection unit for detecting a conflicting state that the preceding instruction performs a write operation into a general register of the general register group and the succeeding instruction reads an operand from the same general register, in accordance with instruction decode informations provided by the instruction hold unit; and a contention detection unit for detecting a contention state that the preceding instruction performs a write operation into the same general register and the succeeding instruction also performs a write operation into the same general register, in accordance with instruction decode informations provided by the instruction hold unit.
    • 数据处理器包括:指令检测单元,用于根据由指令保持单元提供的指令解码信息,检测后续指令将读出操作数写入通用寄存器组,而不对其进行算术或逻辑运算; 冲突检测单元,用于检测前一指令对通用寄存器组的通用寄存器执行写入操作的冲突状态,并且后续指令根据由指令保持提供的指令解码信息从同一通用寄存器读取操作数 单元; 以及竞争检测单元,用于根据由指令保持单元提供的指令解码信息,检测前一指令对同一通用寄存器执行写操作的竞争状态,并且后续指令也对同一通用寄存器执行写操作 。