Answer the following statements true (T) or false (F)

1) PL/SQL is a nonprocedural language developed by Oracle Corporation.
2) The SQL language has built-in error checking and error handling, but PL/SQL does not.
3) Three types of variables used in a PL/SQL program are local, host, and substitution.
4) A variable with a NOT NULL constraint and a constant must be initialized with a value at the declaration time.
5) An assignment statement is used in the executable section to assign value to a
variable or a constant.

1) F
2) F
3) T
4) T
5) F