Showing an image from Database in a Bootstrap page.

I have an image in a table in a database.
I have a bootstrap page with a component to hold and show this image on the screen. But something goes bad. Nothing is shown.

What kind of ElementClassName do I need in Bootstrap to show an image?

All I found has a src property, but my data is on a DataSet.

I'm sorry but I do not have sufficient information with this to answer your question.
ElementClassName of what?
Showing the image where?
How is the image stored in the database / dataset?