If in the GENERIC ERD the Symbol 1 is > and the Symbol2 is 0<, then the number of optional columns in the relational schema resulting from mapping the GENERIC ERD is 0.
Indicate whether the statement is true or false
Question 2
Observe the ER diagram for the ZYX Company:Which of the following is true according to the ZYX Company ER diagram?
A) An employee can serve many customers and he or she has to serve at least one customer
B) An employee can serve one customer or he or she does not have to serve any customers
C) Each employee serves exactly one customer
D) Employees do not serve customers
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