A project network is a graph (flow chart) depicting the sequence in which a project's terminal elements are to be completed by showing terminal elements and their dependencies. A graph is In linguistics, a letter or symbol such as an alphabetic letter, a Chinese character, or a hieroglyph. ... A simple flowchart for what to do if a lamp doesnt work A flowchart (also spelled flow-chart and flow chart) is a schematic representation of a process. ... In project management, a terminal element is the lowest element (activity or deliverable) in a work breakdown structure; it is not further subdivided. ... In a project network, a dependency is a link amongst a projects terminal elements. ...

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The work breakdown structure or the product breakdown structure show the "part-whole" relations. In contrast, the project network shows the "before-after" relations. In project management, a work breakdown structure (WBS) is an exhaustive, hierarchical (from general to specific) tree structure of deliverables and tasks that need to be performed to complete a project. ... In project management, a product breakdown structure (PBS) is an exhaustive, hierarchical tree structure of components that make up a project deliverable, arranged in whole-part relationship. ...

The most popular form of project network is activity on node, the other one is activity on arrow.

The condition for a valid project network is that it doesn't contain any circular references. A circular reference, or sometimes known as a run-around by some people, is a series of references where the last object references the first, thus causing the whole series of references to be unusable. ...

Project dependencies can also be depicted by a prececessor table. Although such a form is very inconvenient for human analysis, project management software often offers such a view for data entry. Microsoft Project 2000 showing a simple Gantt chart Allegedly, the first software support tool for project management was developed by Datasaab for their computer D21 in the early 1960s. ...

An alternative way of showing and analyzing the sequence of project work is the design structure matrix.