everyday chemistry - Is dissolving salt a chemical reaction or a physical change?

Physical changes are limited to changes that result in a difference in display without changing the composition. (source)

e.g. melting water or dissolving sugar in water

Chemical reactions are the processes by which chemicals interact to form new chemicals with different compositions. (source)

e.g. burning $\ce{H2}$ to $\ce{H2O}$

But what is dissolving salt in water? Is that a physical change (like dissolving sugar) or is it a chemical reaction?