Test

1. Which of the following is a category of entities? A)person B)place C)object D)concept E) in all of these 2. A descriptive property or characteristic of an entity is: A)a knowledge domain B)an attribute C)an entity instance D)an entity existence E)n atomic number 53 of these 3. A data type: A)defines what type of data can be stored in an attribute. B)could be text, number, date, time, yes/no, value set or image. C)consists of create attributes. D)both (A) and (B). E) no(prenominal) of these 4. What defines what values an attribute can legitimately take on? A)realm B)entity C)relationship D)domain E)none of these 5. The value that is recorded in an attribute if a substance abuser does not specify one is cognize as the: A)domain B) suggestion C)default value D)data type E)none of these 6.

An attribute or group of attributes that assumes a unique value for severally entity instance is a: A) domain B) pigment C) default value D) data type E) none of these 7. each candidate key that is not selected to become the main(a) key is called: A) the entity key B) the concatenated key C) the subsetting key D) the domain key E) ! the flick key 8. If an employee entity had both an EmployeeID attribute and a fond(p) Security Number attribute, the one that was not used as the primary key would be called a(n): A) entity key B) concatenated key C) alternate key D) candidate key E) all of these 9. An attribute or concatenated attribute whose values divide all entity instances into useful subsets is known as: A) primary criteria B) secondary criteria C)...If you pauperism to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper