Abstract: Combining different resource types into a single logical resource can provide a perspective more suitable for managing a given computer program. Resources of different types that have similar characteristics are combined as a single resource type. Resource management policies are applied against the different resource types via the single combination resource type, wherein on a single computer or applied against a cluster of computers.

Abstract: A source module and its changes in a parent and a child development environment of an hierarchy of development environments are created as a first and a second delta structure in their respective environments. Various procedures and working tables/files are provided to merge the second delta structure into the first delta structure whenever the latest revision of the source module in the parent environment is reconciled to the latest edition of the source module in the child environment, and to merge the first delta structure into the second delta structure whenever the latest edition of the source module in the child environment is resynchronized to the latest revision of the source module in the parent environment. As a result, as the process is repeated by other parent and child environments of the hierarchy, change deltas are created and propagated among the environments without any loss in change history.