Photo database on website

Have a look in the plugins section for “image slider”, “picture slider” or “jquery slider”. You’ll find a whole lot of plugins that offer that sort of functionality.

I would suggest using a plugin

if you mean like a gallery
try a plugin like Next Gen Gallery

if you mean like a slider
try a plugin like NivoSlider

i mean something sort of like this:
https://www.bodybuilding.com/exercises/finder/lookup/filter/muscle/id/14/muscle/glutes

id say the best way to do that would be to have each as a post.. with meta values/categories/tags if you wanted to filter them.. then have the images as each post’s thumbnail..

unfortunately to have a database of images with content associated with them.. you gotta put it into the database to begin with.. which is what it looks like they have done on that site..