APPARATUS AND METHOD FOR STORING DIAGRAM DATA

An apparatus for storing data for use in displaying diagrams comprises a computer and a file server. Each diagram includes boxes and flow lines connecting the boxes. The software includes a database and a main program which is responsible for storing and retrieving diagram data as well as performing...

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Hauptverfasser: WITTGREFFE, JOHN PETER, YATES, MARTIN JOHN, PUTLAND, PAUL ANTHONY, VIDELO, IAN DAVID EDMUND, SKEVINGTON, PETER JOHN
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creator WITTGREFFE, JOHN PETER
YATES, MARTIN JOHN
PUTLAND, PAUL ANTHONY
VIDELO, IAN DAVID EDMUND
SKEVINGTON, PETER JOHN
description An apparatus for storing data for use in displaying diagrams comprises a computer and a file server. Each diagram includes boxes and flow lines connecting the boxes. The software includes a database and a main program which is responsible for storing and retrieving diagram data as well as performing predetermined operations on the data. In the database, data describing a box is stored as an instance of a first software object class, data describing a flow line is stored as an instance of a second software object class, general data relating to a diagram is stored as an instance of a third software object class, and data describing the location of each entity (box or flow line) on a diagram is stored as an instance of a fourth software object class. Each instance of the fourth software object class includes a pointer to the instance of the third software object class which contains general data for the diagram and also to a pointer to the instance of the first or second software object class which describe the entity.
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
title APPARATUS AND METHOD FOR STORING DIAGRAM DATA
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