plural of datum plane

plural of datum point

A point which serves as a reference or base for the measurement of other quantities.

(engineering) A plane which serves as a reference or base for the measurement of other quantities.

Any fundamental way of organizing data in a database, such as the hierarchical model, the network model or the relational model.

plural of data type

A computer file that stores data for use by an application or system.

plural of data flow diagram

plural of datum circle

(engineering) A surface on a workpiece that establishes a datum.