Computer Knowledge Zone (Think Different)

Q: - Write a program to input two numbers and add them?             gedit add.sh             clear             echo “enter two numbers:”             read a             read b             sum=`expr$a+$b`             echo $sum Syntax for if-else:- (1)          if test condition             then                 ---------                 --...

Codd’s rules for RDBMS (i)                 The information rule. (ii)              Guaranteed access of   data (iii)            Systematic treatment of null value. (iv)            On line DB support. (v)              Comprehensive sup-language rule. (vi)            The view update rule. (vii)         Insert update rule. (viii)       Physical data independence. (ix)            Logical data independence. (x)              Integrity rule (xi)  ...