Case Based Critical Thinking Questions

question 28

Multiple Choice

Case Based Critical Thinking Questions
Marie works for a busy pediatrician's office. The practice has a sophisticated database for all records and information that pertain to the practice. The doctor for whom she works is participating in an academic study, and she needs a report that lists the patient's name, date of birth, and the names of parents or guardians. The doctor would like to see the patient's full name in the format Lastname, Firstname even though they are separate fields in the database. She would also like to see the data for the fields Mother, Father, and Guardian, regardless of whether or not data is actually entered in those fields. Based on the doctor's requirements for the report, Marie must create a query on which to base the report.
-Marie creates the following expression as a new field in the query that she will use to create the report requested by the doctor PatientName: [LastName] ", " [FirstName] . This expression is an example of ____.

• A)IsNull
• B)concatenation
• C)nonnull
• D)an expression using a logical operator

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Definitions:

Pure Monopoly

A market structure where a single supplier provides a unique product or service with no close substitutes, controlling the entire market.

Oligopoly

A market structure characterized by a small number of firms controlling a large majority of the market share, often leading to limited competition.

Monopolistic Competitive

A market structure characterized by many firms selling products that are substitutes but differentiated from one another, leading to non-price competition.

Short Run

A period in economics during which at least one input, such as plant size, is fixed and cannot be changed by a firm.