A Meta-model of The and / or Method
As shown in the intertwined configuration structure, an AND / OR graphs can be used to illustrate the interplay of product model and version model. The graphs consist of nodes and edges, and selections of the nodes represent the configuration of a certain software product of a certain version. There are two types of nodes — AND nodes and OR nodes. Analogously, a distinction is made between AND and OR edges, which emanate from AND and OR nodes, respectively. A meta-model is presented in the following figure:
An unversioned product graph can be represented by exclusively AND nodes/edges. Then this AND/OR graph will be the same as the product model or product compositions. While versioning of the product graph is modeled by introducing OR nodes. Versioned objects and their versions are represented by OR nodes and AND nodes, respective.
The dependency relationships and composition relationships can be both represented by AND edges.
Read more about this topic: Component Repository Management
Famous quotes containing the word method:
“The method of scientific investigation is nothing but the expression of the necessary mode of working of the human mind. It is simply the mode in which all phenomena are reasoned about, rendered precise and exact.”
—Thomas Henry Huxley (1825–95)