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.
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Answer:
lack knowledge of geographic al feature lack of manpower necessary to operate the work
<span>Parental monitoring is most likely to be effective and healthy when it is "a part of a warm, supportive relationship".
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Parental monitoring alludes to parental mindfulness, watchfulness and supervision of adolescent exercises in numerous areas (i.e., companions, school and conduct at home), and correspondence to the youthful that the parent is worried about, and mindful of, those exercises.
<span>this causes some bias, because people without phones cannot be in the sample</span>
After she finished her speech, gail's classmate told her that she didn't appear nervous at all-while gail was sure the audience could see her hands shaking. this demonstrates the illusion of transparency.
