Every instance of data entity A is related to many instances of data entity B, and every instance of B is related to one instance of A.

Every instance of data entity A is related to many instances of data entity B, and an instance of B is related to at-most one instance of A.

Location

Amplification

Loudness

Pitch

Cyclical sounds

The short ones to the next taller ones, and those to the next taller ones and so forth

They are not connected as they need to move independently

Only those on inner hair cells are linked together, and in random order

Encircling protein rings to bind and allow them to move together

Only those on outer hair cells are linked together, and in random order