Having seen DS9 the picture painted of Bajor is completely different. This makes me question why they later came and took this storyline and reworked it into DS9. The "Bajora" as they are called have different noses. They do retain the same naming convention of last name first. Their earrings (at least Ensign Roe's) are on the wrong ear. The timeline seems to be correct, the Occupation was 41 years. They speak of the planet Bajor being occupied by the Cardassians in this episode as well, but they claim that the Bajora are an exiled race, not an enslaved one. They paint them as refugees wandering the galaxy looking for a home.
Previously I believe it was mentioned that the Federation had an alliance with the Cardassians. I don't see how the Federation would tolerate that kind of tyranny in a friend, but getting to the point, the basis for DS9 is here but it's all over the place. I don't understand why they didn't just make a whole new plan up for DS9, but I can't say I mind.
There is no mention of the wormhole, or the prophets.
This episode is definitely a little weird to watch after DS9. Still, from a TNG perspective it is a very good episode full of lots of action and twisting plots.
Trivia: Ensign Ro (Michelle Forbes) is more recently Admiral Helena Cain of the Battlestar Pegasus in the Battlestar Galatica series. She was also Dara the daughter of Timicin in Season 4 Episode 22, "Half a Life".