[PHP-DB] PHP DB Interaction with Javascript?

[Aaron Wolski]

Hi All,
 
Trying to get my head around something and want to know if it's possible
first.
 
Can PHP and Javascript interact to the point of PHP querying a DB to
find out what records are in use as a variable for another record and
then using JS to A) prevent the user from clicking a delete button; or
B) pop-up a notice telling the user they can delete that particular
record.
 
Hope that makes sense.. any ideas?
 
Thanks!
 
Aaron