data date

see timenow date.

dependency

see logical relationship.

duration

the number of work periods (not including holidays or other nonworking periods) required to complete an activity or set of activities. All activity durations are specified with the same duration unit.

duration unit

the unit of time that each activity in the project lasts. The following choices are available:

• second

• minute

• hour

• day

• weekday

• week

• month

• qtr

• year