Hitachi, Ltd.

Hitachi Microcomputer Engineering, Ltd.

Hitachi Software Engineering Company, Ltd.

Hitachi Microcomputer System, Ltd.

Hitachi Chubu Software, Ltd.

Hideo Mutoh

Yukio Nakano

Masashi Tsuchida

Hiroyuki Kitajima

Shigeru Yoneda

Kiyoshi Yata

Tadashi Ohsone

Keiji Moki

Toshio Honma

Shoo Urabe

Nobuhiro Taniquchi

Shou Urabe

Takehiko Shibayama

An information life cycle management system and an information organizing method using the computer system stores information objects composed of a database and program, and a data processing device for processing an information object which is a block of the information in the storage device. Processing and execution of an information object is managed based on information life cycle states, starting with generation of the information object and ending with aborting the information object. An information accessor manager governs the available operation type and area of use of manager information based on the information life cycle state. As information object definition language defines attributes of the information structure and information life cycle state and the managed information object. The information objection is managed in accordance with contents defined by the language. An administrator of the information object with an information life cycle transform language controls the transform sequence and timing of the information life cycle state transformation for each information object. A transform of the information life cycle state is controlled in accordance with the contents defined the language. An information access unit provides an access language for using the information object and selecting and executing a proper access method based on the information life cycle state of the information object. Thus, the information is processed safely and efficiently based on the information life cycle state starting with the generation state and ending with the abort state of the information object.

Information life cycle processor and information organizing method using

A data processing system capable of searching for desired data requested by a computer from a memory unit. To obviate a disadvantage that the computer has read data partially including desired data from the memory unit and selected the desired data from the read data, the data processing system is provided with a data processing unit connected to a control unit for controlling a memory unit. Desired data is selected by this data processing unit.

Data processing method and system

With respect to input/output requests; a microprogram controls collection of data according to the data format; data accessing divides the requests for every recording medium and performs asynchronous processing; an on-line process is carried out in view of the processing priority order of the requests; parallel accessing sets requests for each medium; buffer control assures a block buffer and a page address list before receiving requests; data accessing sets a list of CCHHR codes in response to a continuous characteristic of the stored state in the recording medium; and mode deciding judges the two data transfer modes, a page search mode and a data search mode, in response to the requests.

Input/output processing method in a database management system

Growing community of inventors

Yokohama, Japan

Hideo Mutoh