If you had a condition in an element that depends on an entry having content
If you had a condition in a flow that depends on the absence of data
If you need counting of entries that have that content
If you count entries that do not have that content
Please note that the way the question is posed requires more context.
Are you interested in understanding more about best practices in database modeling? If so, this is a great resource recommended by a frequent Bubble contributor @boston85719. In my case, learned tons from going through some of the blog articles!
Yes, I think this is one of the resources I provide to my Bubble Bootcamp students that I frequently hear was very helpful…the post I listed this on originally is also one of my most liked tips, so definitely a resource a lot of Bubblers find helpful.