Q:

Collective name for source and target

The context: I have 2 databases. The source database where I retrieve data and the target database where I insert data. 
What is the collective name I can use for source and target in this context? Target can also be called destination.

A:

Endpoint may work:

Merriam-Webster:
either of two points or values that mark the ends of a line segment or interval
Wikipedia:
either of the two nodes of a graph;
  either of two extreme points on a line segment

