A set of drones are deployed at different geographical locations. Their location is described on the following map (X and Y coordinates). 

The drones annotate each of the publications issued with their coordinates (X,Y), and publish on an attribute-based publication/subscription service.

Give a subscription expression ????1 which will allow you to subscribe to data from drones 2 and 3 only (not from drone 1).

Transcribed Image Text:

Y 30 25 20 15 10 0 0 5 10 15 X 20 * * 25 X 30 35 x Drone1 Drone2 Drone3 Y 30 25 20 15 10 0 0 5 10 15 X 20 * * 25 X 30 35 x Drone1 Drone2 Drone3

Answer rating: 100% (QA)

You can use a subscription expression that specifies the range of X and Y coordinat... View the full answer