| 21. 13. 1. BOOLEAN |
|
|
The BOOLEAN datatype is used to store true/false values. |
Its range is only the two values, true and false. |
The Syntax for the BOOLEAN Datatype |
|
|
Here are some examples: |
|
hired_fired_same_day BOOLEAN;
birthday_is_today BOOLEAN;
print_this_record BOOLEAN;
|
|
Boolean variables are often used as flag variables. |
Boolean variables are also used to store the results of logical calculations. |
For example, |
|
isTrue := (emp_birthdate = trunc(sysdate))
|
|