Null Values Can Cause Problems Because They Are Ambiguous

question 78

True/False

Null values can cause problems because they are ambiguous.

---

Definitions:

Allergy

An immune system response to a foreign substance (allergen) that is not typically harmful to the body. This reaction can cause various symptoms, such as sneezing, itching, and swelling.

Itchy Eyes

A sensation that leads to the desire to rub the eyes, often caused by allergies, infections, or dryness.

Common Cold

A viral infection of the nose and throat, which is minor and self-limiting, characterized by sneezing, coughing, and a runny nose.

Influenza

A contagious respiratory illness caused by influenza viruses, characterized by fever, cough, and muscle aches.