Cost control are important aspects of project management. Cost data for a project may be associated with activities or groups of activities or with resources, such as personnel or equipment. For example, consider a project that consists of several subprojects, each of which is contracted to a different company. From the contracting company's point of view, each subproject can be treated as one cost item; all the company needs to know is how much each subproject is going to cost.
On the other hand, another project may contain several activities,...
