Object-relation mapping system supporting model extension in runtime, and method thereof
An object-relational mapping and model technology, applied in database models, object-oriented databases, instruments, etc., can solve problems affecting the normal operation of commercial systems, time and cost uneconomical, etc., to reduce impact, eliminate outages, reduce cost effect
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[0034] It is an object of the present invention to support runtime model extensions for ORM systems. There are many possible extensions or modifications to the object-oriented model, including for example:
[0035] ● Add new attributes to existing classes;
[0036] ● remove attributes from existing classes;
[0037] ● Add new relationships between existing classes;
[0038] ● Delete the relationship between existing classes;
[0039] ●Add new classes
[0040] - Add properties to the new class;
[0041] - Add new relationships between new classes and existing classes;
[0042] ● delete the new class;
[0043] ●Rename operation, which can be realized by adding / deleting operations.
[0044] Of course, it can be understood that the extension or modification of the model is not limited to the types listed above, and it is only illustrated here.
[0045] figure 2 The architecture of an extended ORM system 20 according to one embodiment of the present invention is shown. T...
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