A messaging system and method for creating a messaging hierarchy in a computer network are described. The network is made up of multiple network entities, which include both publishing entities and subscribing entities, where the publishing entities have data of which the subscribing entities may have need. The messaging system and method for creating a messaging hierarchy also include a data hierarchy applied to the data exchanged between the publishing entities and subscribing entities. The data hierarchy determines the virtual connections formed between the network entities in response to publication and subscription requests exchanged between the entities, such that the virtual connections established between network entities form a hierarchy corresponding to the data hierarchy.