A method and system create a model of a set of relationships between a set of parent computer network objects and a set of corresponding child computer network objects, over a period of time, and output a user interface graphing the model in a single view to illustrate the set of relationships over the period of time. The parent computer network objects include virtual machines and the child computer network objects include hosts. The user interface includes a search option to provide for a search of problems with the child computer network objects over the period of time.