These are just more columns that we would be adding to our posts table.
The lat and lng was designated as a REAL number.
For photo mentions, it is mapped that a tags table will map a user to a post.
Something that had to be done in this section is to calculate the XY distance for where the tag popover is made.
Some questions that you need to thing about with the modeling of comment mentions:
In terms of the table model, we have a couple of options:
photo_tags and caption_tags.