Question: For mapping a category whose defining superclass have different keys, it is customary to specify a new key attribute, called a _ _ _ _

For mapping a category whose defining superclass have different keys, it is customary to specify a new key attribute, called a _____________
Question 39 options:
Surrogate key
Primary key
Foreign key
Unique key

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Q:

Please be sure to not copy any answers verbatim. original answers needed will be scanned through the safe-assign system. read the Marketing Debate below What is the Best Way to Position a brand? and...

Q:

In SQL, Using MAMP It says it thoughout each part. It is SQL. 3. Write one statement to alter the table Booking to add a column, property No, which: a is an integer representing the property No for...

Q:

Python question: eight puzzle Part I and Part II are here:...

Q:

Done on phpMyAdmin + SQL, you can make your own Guest and Booking as examples. . Part 1: Primary Keys / Foreign Keys / Default Bring up your previous 2 assignments with the SQL code: 1. Write the...

Q:

Done on phpMyAdmin + SQL Booking Guest . Part 1: Primary Keys / Foreign Keys / Default Bring up your previous 2 assignments with the SQL code: 1. Write the statements to remove (drop) the previous...

Q:

Microkernel operating systems aim to address perceived modularity and reliability issues in traditional "monolithic" operating systems. (i) Describe the typical architecture of a microkernel...

Q:

1. Evaluate the often tried approach of adopting past solutions to similar problems encountered today? Is this a form of linear thinking or not? 2. Why is linear thinking dangerous? 3. Whether the...

Q:

use python do the work in every space where it says #YOUR CODE HERE A Sock Drawer Let us model a sock drawer. How does a sock drawer work? Well, when you do the washing you end up with a bunch of...

Q:

I have to create a program in C and I can't figure it out. The program has to read a source file. Please help. /******************************************************************** PROJECT: Glossary...

Q:

the following relational algebra questions based on tables S1 and S2 (below) Question 1 What is the output of S1 S2 ? The row identified by sid 22 The rows identified by sid 31 and 58 The row...

Q:

You have recently joined the audit firm of Smith & Singh as an audit graduate. At your first staff training session, the staff training manager comments that underlying all assurance engagements is...

Q:

Harry Klein, inventor, formed Peer-less Load Levelers Company in 1955 to produce a simple three-piece device for automatically leveling loads on industrial conveyor belts. As the business grew and...

Q:

Blossom Corp. makes many products but is best known for its two styles of park benches: Classic and Modern. Blossom initially set up its MOH allocation system to pool all MOH costs into two key...

Q:

Assume that you have a sample of n1=12 and n2=15 from two independent normal populations and you wish to conduct an independent samples t-test. How many degrees of freedom does the test statistic,...

Q:

(Appendices) ENDING INVENTORY, COST OF GOODS SOLD, AND GROSS MARGIN. Wilson Company sells a single product. At the beginning of the year, Wilson had 120 units in stock at a cost of $8 each. During...

Q:

(Appendices) SALES RETURNS. Swan and Bloom, Inc., is a wholesaler of novelty items to small stores. All sales are on credit with no discount offered. During March, Swan and Bloom accepted the...

Q:

(Appendices) INTERNAL CONTROL FOR SALES. Alcoa Building Products distributes aluminum siding and related building products to building contractors, all of whom purchase on credit. LO6 REQUIRED: List...