A method for making files compatible between different computers having different binary structures while using the same operating system by keeping all files in a standardized canonical order when they move to or from external data storage or communication means. The method includes converting all binary data accessed from a file or communications channel from the canonical order to the natural order of the host computer before using the binary data in the host computer and converting all binar...

A method for generating object code which represents a conformance of input data structures into that of a prespecified output data structure such that at runtime data in the input structures can be embedded into the output structure. At least some of the input and output structures have some common fields but differ in the distribution of the hierarchical and repeated groups of said fields. The method utilizes graphical models for characterizing the prespecified forms and a series of operations...

A data processing system includes means for enabling programs originated for a system structured for operating in a first data base environment to be executed by the system which is structured to operate in a second data base environment through the inclusion of stored tables and special routines without having to rewrite the programs to operate in the second data base environment.

An associative file design method and apparatus are used for automatically generating an integrated data base design structure, with minimal data redundancy, for use in multi-application general purpose digital computing systems. The integrated data base design structure is automatically produced by a programmed digital computer in the form of a report or graph structure which permits the data base designer to design a data base system with minimal data redundancy. The data needed by each applic...

In order to highly speed up the pattern matching of tree structured data in a logic programming language, the priority order is set when the data owned by the individual nodes of a tree structure are to be transversely sought, and the tree structured data are expressed in a vector type, in which they are arranged in that priority order, so that they are compared consecutively from the head for each element of the vector.

A method of performing remote process execution in a computer network. A remote process execution request, including an identification of a process to be executed, is transmitted from a requesting computer to a serving computer. At both the requesting and the serving computers, a file addressing structure is established, so that a file reference by the remote process at the serving computer addresses a file located at the requesting computer. The remote process is activated at the serving comput...

An apparatus for utilizing a logical compare instruction is disclosed. The apparatus develops a data field descriptor associated with and describing the attributes of each of the operands of the compare instruction. If the operands have different formats, when matching the contents of a first operand to the contents of a second operand, one operand is converted at execution time of the compare instruction to a format consistent with the other operand. The apparatus determines whether the content...

An improved method for access to data from a remote computer and an improved method for accessing remote heterogeneous data bases. The method includes a personal computer having an application program for processing data by keyboard input that operates on a local applications data base having files with a first file structure. A remote host computer accesses data in remote files having a second file structure. A preselected keystroke of the first computer modifies the data accession program of t...

A process for transitioning a hierarchical input database to create a hierarchical output database. The processing occurs generally in two stages. During the first stage, information contained in user-specified driver tables is utilized to extract only pertinent data from the input database and thereby produce intermediate data in a form accessible by the second stage. During the second stage, information from the driver tables is applied to the intermediate data to map this data to the required...

A method and apparatus for creating a transitive closure of a database when the database is stored on a secondary storage in the form of links connecting nodes. The method consists of partitioning the database, transferring one partition at a time from the secondary storage to the main memory, and processing a partition in such a way that accesses to the portions of the database not in main memory are minimized. As much of the unprocessed database as would fit a predetermined fraction of main me...