WordPress Plug Ins, DB, & server transfer

Hello, I have been hard at work on my company utilizing wordpress and a lot of plug ins for a while now. I have done all my development initially on my local machine on purpose for speed and ease of implementation.

Now, however, I am looking at migrating my WP site to my hostgator web server. In reading through wp migration to another server, I noticed that wp transfer requires copying over the wp db.

My question is, do wordpress plug ins use the wordpress DB? And are there any considerations I should make in transfering over my server? Thanks.