Question: Which single attribute is definitely a candidate key? Why? If there are no candidate keys, explain why.

Which single attribute is definitely a candidate key? Why? If there are no candidate
keys, explain why.

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:

I posted this question twice now, and I keep getting wrong answers, I wanted the candidates keys not the primary key. I already know std-id and email are candidates keys, but I'm not sure if...

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:

For the given instances (i.e. snapshot/subset) of a student relation, identify the following attributes (set) as might be a key or definitely not a key, and provide explanations. 1. name 2. sid 3....

Q:

I Question 2: We discussed the merge-join algorithm for an equi-join r Nr. A=s.B s, when both relations are sorted in ch12.pptx. The pseudo code is shown in the slide 12.32 in ch12.pptx and discussed...

Q:

Please show your work and answer all questions! I am stumped Use the following listing to answer questions 17. State any assumptions you make, as needed. Orion's Belt Consulting (OBC) is a consulting...

Q:

CANDIDATE KEY For data kept by a single publisher-contains an entity BOOK, the attributes are known to be as follows: Book Name varchar(50), is always known for each book and no two books have the...

Q:

Lesson 12 Quiz (Show/Explain all Work) IST 230 Relations on Sets, Databases 1. Let A = {0, 1, 2, 3, 4, 5, 6, 7, 8} and B = {1, 2, 3, 4, 5, 6, 7, 8}. Now let R be a binary relation R from A to B such...

Q:

29:010:485 Sample Midterm Exam 1 Part I. Multiple Choice Questions 1. The purpose of accounting has always been to a. record debits and credits b. provide information useful for economic decision...

Q:

store(st_code QUESTION 1 1. Consider the following tables STORE(ST CODE, ST_NAME, ST MANAGER, ST_LOCATION EMPLOYEE(EMP NUMBER, EMP_LNAME, EMP FNAME, EMP_TITLE, ST CODE) For the tables given above,...

Q:

1. Consider the following tables: VENDOR( VEN_NUMBER , VEN_CONTACT, VEN_PHONE) PRODUCT( PROD_CODE , PROD_DESCRIPTION, PROD_PRICE, VEN_NUMBER) For the tables given above, work on the problems below:...

Q:

If you know that the absolute change in the accounts receivables for the year 2016 is + 5000 dinars, and the absolute change in 2017 is +9000 dinars, and the relative change in the accounts...

Q:

Enterprise Solutions Inc. licenses its productivity software to Blackmon Company for $ 100,000, payable at contract inception. Enterprise agrees to provide semiannual software upgrades over the 5...

Q:

An organization uses internal controls to safeguard assets, enhance the accuracy and reliability of accounting records, increase the efficiency of operations, and produce correct financial...

Q:

give rationale why mann whitney test best statistical test for this case : Do significant differences exist between husbands and wives regarding holiday depression? There is an ordinal measure of...

Q:

What are two circumstances that affect interpretation of fair use of copyrighted material? (Objective 2)

Q:

How can a business or organization code of conduct help guide communication by its employees or members? (Objective 5)

Q:

Ethics. Technology. You received an iPod for your birthday that stores videos and pictures as well as music. Describe how using your iPod would increase your selectivity for content choice, time, and...