The entity integrity rule states that a primary key attribute can be null. Thus the statement is false.
<h3>What is an entity?</h3>
An entity is refer to any object that exists in reality. These entities are Independent in nature. Each row in a table should be a distinct entity, which is ensured by entity integrity.
The entity integrity rule states that a primary key attribute can not be null as it shows unique characteristics of an entity.No primary key value can be null according to the entity integrity constraint because it is needed to identify specific attribute values in relation.
Therefore, the statement is False.
learn more about entity integrity, here:
brainly.com/question/19593791
#SPJ4
Answer:
B. Americans stood in food lines
Explanation:
I just took the test
The Spartans believed that being a military society was the only way to survive<span />
<span>This is true. This model gives managers the ability to understand the types of people they will be leading, and bases it on the ability for a person to critically think about directives and how well the person engages with others. A brown-noser, in this instance, is a person who will not think critically about a directive, deciding to follow anything the leader gives to them, as well as engaging with this leader often, trying to get in their good graces.</span>