General Guidelines

Managing an Environment for Subsetting › Apply Effective Project Management Techniques › Use of Multiple Models › General Guidelines

General Guidelines

To see the general guidelines for deciding whether to use one model or multiple models, click Table.

The following table shows guidelines for deciding to use one model or multiple models.

Factors Favoring Use of	One Model	Two or More Models
Project size	1 to 100 entity types	over 100 entity types
Project team size	1 to 50 members	over 50 members
Degree of sharing	high	low
Release strategy	all at once	phased

When deciding whether to divide a project into multiple models, weigh the cost of increased version control against the benefit of more flexible development and the reduced subsetting activity against each model.

Note: For more information, see the “Checking a Subset In or Out of the Encyclopedia” chapter in this guide.

If you decide to use multiple models, it is best to delay splitting up the initial project model as long as possible to minimize the cost of the versioning. As stated earlier, subsetting usage does not reach its peak until the Procedure Action Diagram building stage of Design.