Critical Thinking Questions Case 11-2 in Your Database Course, Your

question 91

Multiple Choice

Critical Thinking Questions Case 11-2 In your database course, your instructor has given you a small database that has a lot of invalid data, issuing the challenge to you that you work to apply validation rules to the data and determine what checks need to be applied in order to restore integrity to the data. A quick scan of the data in the First Name field in the database yields the numbers 3 and 7 and an asterisk. What kind of check should you run on this field?

• A) completeness check
• B) alphabetic check
• C) consistency check
• D) check digit

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Definitions:

Polyurethane

A polymer composed of organic units joined by carbamate (urethane) links, used in foams, elastomers, and coatings.

Monomer Units

Small molecules that can be bonded together to form polymers.

Cationic Polymerization

A type of polymerization where a cationic initiator transfers charge to a monomer causing it to become reactive and link to other monomers.

Poly(acrylonitrile)

A synthetic polymer made by polymerizing acrylonitrile, used in the production of fibers, plastics, and rubbers due to its strength and thermal stability.