Pract1.txt

-- Pract1

group: Pract1 


R1 = {
	Name:string, 	course:string,	 mark:string
	Me, db, A
	Friend, cpp, F
	Friend2, java, null
}

R2 = {
	Name:string, group:number
	Me, 1
	Friend, 2
}

R3 = {
	group:number, course:string
	1, db
	2, cpp
}