Project Management Glossary


# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
There are 17 terms in this directory beginning with the letter D.
Decision tree analysis
A diagrammatic technique used to illustrate a chain of decisions and to examine the implications of multiple decision-making or situational outcomes.

The hierarchical breaking down of project deliverables into smaller components that are easier to plan and manage.

Defect repair
An action taken to remedy a product that is nonfunctional or does not match expectations or requirements.

The phase in the portfolio life cycle in which projects programs

Definitive estimate
A definitive estimate reaches a total project cost estimate by computing cost estimates for all a project’s work packages. Definitive estimating is considered a highly accurate estimation technique, with estimates falling within a ten-percent range of the actual budget.

The transferring of risk to another party, generally via a contract.

A final product or product component that must be provided to a client or stakeholder according to contractual stipulations.

Delphi technique
An estimation method based on expert consensus. Experts make estimates individually and simultaneously and then review their estimates as a group before making another set of estimates. The process is repeated with the pool of estimates typically becoming narrower after each round of review until a consensus is reached. (See also wideband delphi)

A logical relationship between project activities in a network diagram that determines when a dependent activity may begin.

Discrete effort
Project work directly associated with components of a work breakdown structure. It is directly measurable. Discrete effort is one of three types of activities used to measure work performance as part of earned value management.

Discretionary dependency
The preferred way to sequence activities when there is no logical limitation on how they must be ordered.

Do nothing option
An element of a project business case that states the consequences, if any, of not undertaking the project.

A method used to exercise control on the release of project funds. Instead of making entire project budgets available from the outset management may choose to release funds at specific times. These releases are called drawdowns. Drawdowns may coincide with phase gates so that funds are released at the beginning of each phase.

Dummy activity
In activity-on-arrow diagrams, where arrows represent activities, dummy activities show logical relationships between activities. They are not actual activities themselves,dummy activity arrows are drawn with broken lines to differentiate them from regular activity arrows.

The amount of time taken to complete an activity or task from start to finish.

Duration compression
Duration compression techniques shorten a project’s duration without reducing its scope. This typically requires additional expenditure. There are two main duration compression techniques: crashing and fast tracking. (See also schedule compression technique)

Dynamic systems development method
The dynamic systems development method is one of the agile product development methodologies. Like other members of the agile family, it conducts development in a series of iterations, with user-story-based improvements made in increments. The dynamic systems development method operates with fixed cost and time constraints and uses the MoSCoW prioritization method to identify the desired product requirements with these constraints in mind.