In this task, you are given a sentence or phrase in Xhosa. You must translate it to English in a way that is equivalent in terms of meaning and grammatically correct.

Lunxulumano lobuchule olukhoyo phakathi kwamanani ogcino-lwazi kunye nempawu zokuluchaza ezichazelwe olo nxulumano nalo manani ogcino-lwazi, yimeko yobukho bemodeli yogcino-lwazi. [DoD 8320.1-M-1; DoD 8320.1-M-X; NBS i-Pub ekhethekileyo 500-152]
The logical relationships which exist among units of data and the descriptive features defined for those relationships and data units; an instance or occurrence of a data model. [DoD 8320.1-M-1; DoD 8320.1-M-X; NBS Special Pub 500-152]