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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Interesting stories is not considered essential for teaching.
A free enterprise system has 5 main and very important attributes. These attributes are: Optional trading, competition, personal property rights, economic freedom, and profit motive.
Utensils, mechanical equipment, and large (fixed) equipment. Utensils are small hand-operated pieces of equipment. Different utensils are made for different tasks, such as for cutting, mixing, blending, or measuring.
Preparation and processing equipments include, broilers, convention ovens, display cooking equipment, frying equipment, griddle and grills, hot plates, microwave ovens, proof cabinets, cooking ranges, revolving tray ovens, steamers, steam-jacketed kettles, steam boiler, dough makers, tilting fry pans, salamander etc.
