[M1984]

If I brought my ipad to my friends place and synced it to their laptop to get some tv shows that were on their system I had to enter my Apple ID for it to sync when I put it in (this didn't work and deleted several things on my ipad also)
however they obviously have their own Apple ID and it's on their system does my friend automatically get all my stuff on my ipad that I have paid for?
Eg books, apps, music, podcasts?

And if I have deleted any of these purchases but it's still on my icloud like books and podcasts music and so forth will my friend now have all of my purchases on their itunes? or because it's deleted it can't be found?
Even though I was the purchaser?

For example I didn't have the ibooks app on my ipad when I synced it on their computer would of they got my all of my books than or because it was deleted would of they not got it?

And after I have taken out my ipad would all my information and downloads and purchases still stay on their laptop and itunes so they can access it? Or because I have now removed the device can they still have access to my purchases and information?