Obtain the invoice date, customer ID$,$ and first and last names for the invoice whose

number currently is stored in I$\_$INVOICE$\_$NUM. Place these values in the variables

I$\_$INVOICE$\_$DATE, I$\_$CUST$\_$ID$,$ and I$\_$CUST$\_$NAME, respectively. Output the contents

of I$\_$INVOICE$\_$DATE, I$\_$CUST$\_$ID$,$ and I$\_$CUST$\_$NAME.

c$.$ Add a row to the INVOICE table.

d$.$ Change the date of the invoice whose number is stored in I$\_$INVOICE$\_$NUM to the

date currently found in I$\_$INVOICE$\_$DATE.

e$.$ Delete the invoice whose number is stored in I$\_$INVOICE$\_$NUM