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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The right answer for the question that is being asked and shown above is that: "c. A destination node must issue an acknowledgment for every packet that is received intact." This is the statement that <span>802.11 transmission requirements contributes to its efficiency.</span>
Answer:Unconditioned response; conditioned response
Explanation: in classical conditioning ,unconditioned response refers to an environmental stimulus which occurs naturally and automatically and triggers a natural response that has not been learned before , this response is called unconditioned response. Like when you cut an onion you will automatically shed an ear.
Conditioned stimulus is previously neutral stimulus such as a bell which is associated with an unconditioned stimulus which is meat , after this association the conditioned stimulus will start to trigger the same response as unconditioned stimulus , this response is a referred to as a conditioned response.
The answer would be the id. This is the identity part made up of oblivious clairvoyant vitality that attempts to fulfill fundamental urges, needs, and wants. Likewise, it works in light of the joy standard, which requests quick satisfaction of necessities.
