Abstract: A topology information system, comprising a topology collection sub-system, a topology database, a topology query sub-system and a topology correlation sub-system. The topology collection sub-system includes at least one topology discovery agent. The topology collection sub-system automatically collects topology information from at least one topology layer of at least one managed world. The topology database is adapted to store the topology information collected by the topology collection sub-system. The topology query sub-system is adapted to query the topology information stored in the topology database using a topology pattern query created by a user. The topology correlation sub-system operates in parallel to the topology query sub-system, constantly monitoring the managed world for events and updating the Information Base accordingly.