Abstract: A derived database processing system in a database processing device comprises a plurality of independent databases which can provide a plurality of users with a group of data to be shared for a common purpose. The derived database processing system comprises a dictionary for managing database logical definition information and database storage information in a secondary memory, a derived database registering unit for determining a definition frame of a new name without violating a definition frame of a name used in a schema definition which defines data in a database, a dictionary information manipulating means for referring to said dictionary when the manipulation target is a derived database, then selecting necessary components of said database, and a database processing procedure generating unit, in a binding process to optimize access routing in a database.

Abstract: A derived database processing system in a database processing device comprises a plurality of independent databases which can provide a plurality of users with a group of data to be shared for a common purpose. The derived database processing system comprises a dictionary for managing database logical definition information and database storage information in a secondary memory, a derived database registering unit for determining a definition frame of a new name without violating a definition frame of a name used in a schema definition which defines data in a database, a dictionary information manipulating means for referring to said dictionary when the manipulation target is a derived database, then selecting necessary components of said database, and a database processing procedure generating unit, in a binding process to optimize access routing in a database.

Abstract: A method of developing a self-describing database management system comprises the steps of holding definition data of a database management system to be developed as data on a database and creating a database management system to be developed by the use of an existing database management system. The database management system to be developed comprises a data definition processing execution program and a bind processing execution program. These two programs include a process to permit access to definition data which form database, and are executed based on the definition data on the database.

Abstract: A database generic composite structure processing system stores data expressed by a logical structure and generates an access schedule in response to an query. The system comprises a generic composite structure element for storing definition information for associating a partial data comprising a table or a partial table expressed by a logical structure with a composite structure of a database in an independent structure in physical media, and for storing definition information for storing data and an optimizing process element for generating, according to the generic composite structure defined by said generic composite structure means, an executable module which is a concrete result of an access schedule in response to an query.

Abstract: A log data management system is used with a database processing system. The log data management system has a plurality of database update units coupled to a database through a common bus. Each of the database update units updates a resource of the database and records log data as an update record. The database update unit writes log data of the resource of the database in a local memory in order of update time of the resource. After the resource has been updated, the database update unit transfers the log data written in the local memory to the common memory. At this time, since the database update unit does not free the resource until the log data is non-volatilized in the common memory, log data are successively stored in the common memory in order of the update time of the resource. When a failure takes place in a resource of the database, log data stored in the common memory are referred to and thereby the resource is quickly closed and recovered.

Abstract: A database processing system using a multi-processor including a plurality of processor modules each having a local memory connected to an external shared memory. The database processing system includes a composite structure definition control part for defining an administrative processor module for controlling an access to a composite structure of a database which has a storage structure independent of a logical structure; and a maintenance/selection control part in an optimum control processor for providing a function of access-controlling a shared process and a local process when an access request arises for a database composite structure, and for dynamically switching the access control process for the composite structure according to the access frequency notified by each processor module.

Abstract: A database processing system for supporting a plurality of storage structures comprises a dictionary for storing information such as basic data organizations relating to the combination of basic data organizations forming each type of storage structure, library parts names relating to said combination, and assembly pattern names an access parts library for storing information such as access parts to basic data organizations which are access methods to each of said basic data organizations, and library parts relating to the combination of said access parts; and an optimizing unit for generating procedures for processing a database by referring to said dictionary and access parts library in response to an query to a database and by combining said access parts to basic data organizations forming a storage structure and said library parts relating to the combination of said access parts.