sampling rate, data rate and bandwidth
Sampling rate (as defined by here is related to the process of constructing a digital representation of an analogue value: -



T is the the period between samples hence the sampling rate is 1/T

Date rate: Say for instance each point on the above waveform was sampled with a 16 bit ADC, at a rate of 1,000 times per second. If the ADC outputted serial data the basic payload data rate would be 16,000 bits per second. There may be other bits added by the ADC that make the overall data rate higher. That's an example of data rate linked to sampling rate.

Regarding bandwidth, this refers usually to a channel's capacity to send data.