A database manager maintains information (in a database) associated with each of multiple resources according to different domain models used to view the resources by corresponding topology services. Model consolidation (for the topology services) and a unique way of storing information associated with the models in the database enables the database manager to efficiently store, calculate, and retrieve topology objects from a database for multiple model-driven applications, which may have commonly defined portions of the domain models. The model consolidation solution provides flexibility and scalability in terms of defining cross-model functionality for model-driven applications. Additionally, the model consolidation solution also allows any model-driven topology service application to operate within a set of domain models derived from application needs.