Most DBMS Products Will Let You Define a Primary Key

question 32

True/False

Most DBMS products will let you define a primary key on a column that contains null values.

---

Definitions:

Overbooking

The practice of selling or booking more of a service than what is actually available, under the assumption that there will be cancellations or no-shows.

Lost Revenue

Revenue that was not earned due to missed opportunities, such as not having enough inventory to meet demand.

Differential Pricing

The strategy of selling the same product to different customers at different prices based on market factors, demand, and customer’s willingness to pay.

Demand Segment

Refers to a group of potential customers who have similar needs and responses to marketing actions, which can shape how products or services are promoted to them.