Answer:
otp
Explanation:
don't know bro ask to your teacher
Answer:
Brainly gives special ranks to users who give outstanding performance in a specific subject. These ranks are known as Wizard rank. Specifically for only one person in each subjects: Maths, Chemistry, Physics, Biology, and English.
Explanation:
Answer:
The expression is :
π[cd) + π(g,h) ],[π(e,f)+π(a,b)])
We will use foreign key and primary key