A resource management infrastructure (200) is proposed, wherein every resource may be represented by multiple (specialized) objects (B1, C1, D1; C2), which instantiate corresponding (specialized) classes (315) modeling different aspects of the resources. In the proposed solution, an edge class (310) is associated with the specialized classes; each resource is associated with a corresponding edge object (A1; A2) instantiating the edge class (which object is identified by a corresponding edge name). More specifically, the classes are organized into a specialization tree (300); the edge classes directly depend on abstract classes, while the specialized classes in turn depend on the edge classes. Each specialized object is then associated with the edge name of the corresponding edge object. In this way, the specialized objects associated with each edge name represent the same corresponding resource. An optimized structure of a relational database (225, 230) implementing the proposed solution is also proposed.