发明名称 |
Apparatus and method for storing diagram data |
摘要 |
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. |
申请公布号 |
AU1954695(A) |
申请公布日期 |
1995.10.17 |
申请号 |
AU19950019546 |
申请日期 |
1995.03.22 |
申请人 |
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY |
发明人 |
PAUL ANTHONY PUTLAND;PETER JOHN SKEVINGTON;IAN DAVID EDMUND VIDELO;JOHN PETER WITTGREFFE;MARTIN JOHN YATES |
分类号 |
G06F17/50;G06F9/44;G06F17/30 |
主分类号 |
G06F17/50 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|