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:
The new testing instrument has A LOW RELIABILITY.
Answer:
Bid an honest farewell, tell them how you feel. You can still be friends or just be in contact somewhat. Seek therapy for emotional assistance.
A Maya city from the Classic Period usually consisted of a series of stepped platforms topped by masonry structures, ranging from great temple-pyramids and palaces to individual house mounds. These structures were in turn arranged around broad plazas or courtyards.
Answer: Economic factor
Explanation:
The economic factor is one of the factor that influence the purchasing decisions as it directly affected the investment value in the business. The economic factor basically include the tax rates, wages, policies and the interest rate in the business.
As, the customers always preparing a budget list so that is why it directly affect the purchasing decisions. The given scenario best explained about the economic factor that influenced the Paul's purchasing decision.
Therefore, Economical factor is the correct answer.
