1. A method of assigning a direction of impact to an association between assets based on an impact of an event mapped to at least one of the assets, the method comprising the steps of: a computer creating a first topic map meta-model that identifies assets and events in a topic map based index with instance ontology based on a topic map meta model that identifies assets and a topic map meta-model that identifies events, mapping assets to events through at least one association between at least one asset of the topic map meta-model that identifies assets and at least one event of the topic map meta-model that identifies events; the computer assigning an identification in the first topic map meta-model to the at least one association between at least one asset of the topic map meta-model that identifies assets and at least one event of the topic map meta-model that identifies events; the computer creating a second topic map meta-model that identifies at least one association between at least one asset and at least one event in a topic map based index and instance ontology with the direction of impact of the event on an association in various scopes between assets, based on an impact of the event on at least one of the assets of the association; in response to a new event being added to the topic map meta-model identifying events, the computer re-creating the first topic map meta-model for the new event and the second topic map meta-model, adjusting the direction of impact associated with the association in the first topic map meta-model, the re-created first map meta-model including a topic map based index and instance ontology for the new event and the adjusted direction of impact; and the computer storing the re-created first topic map meta-model and the re-created second topic map meta-model into a repository.