To represent an IS-A relationship in a relational database design, the IS-A relationship must be ...

Author Question: To represent an IS-A relationship in a relational database design, the IS-A relationship must be ... (Read 37 times)

ishan

Hero Member
Posts: 546

on: Jul 7, 2018

To represent an IS-A relationship in a relational database design, the IS-A relationship must be converted into a HAS-A relationship.

Indicate whether the statement is true or false

Question 2

A combination of two or more columns used to identify particular rows in a relation is a ________.

A) record
B) composite key
C) foreign key
D) surrogate key

wshriver

Sr. Member
Posts: 318

Reply #1 on: Jul 7, 2018

Answer to Question 1

FALSE

Answer to Question 2

B

Need homework help now?

Ask unlimited questions for free

Ask a Question

« previous next »

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.