What would be the correct answer for themfor questions x -, Ask an Expert

Engineering

What would be the correct answer for them?

For questions x - y refer to the following relational schema:

Which of the following statements is true?

(a) a key is a superkey
(b) a candidate key is a superkey
(c) a primary key is a superkey
(d) all of the above

View complete question

Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M91701736

Have any Question?Write your Review or question?

Related Questions in Computer Engineering

The following data is the results of a random sample of the

The following data is the results of a random sample of the ages (in years) of 12 houses in a community: 18, 22, 23, 19, 18, 24, 26, 20, 17, 12, 27, 28. Assume the population is normal. Construct a 90% confidence interva ...

A company that supplies batteries for watches guarantees

A company that supplies batteries for watches guarantees that 95% of the batteries it ships will be free from defects. You test a sample of 50 batteries you received. You find that fewer than 10 have defects. Does this l ...

After reading the article 10 techniques for gathering

After reading the article, 10 Techniques for Gathering Business Requirements, think about the following scenario and answer the questions provided. Wilmington University is implementing a mobile app where students are ab ...

What are the differences between four types of economics

What are the differences between four types of economics evaluations and their differences with other two (budget impact analysis (BIA) and cost of illness (COI) studies)?

Identify at least two 2 factors that have led to the

Identify at least two (2) factors that have led to the explosive growth of digital crime over the past a few decades. Next, describe the most common forms of digital crime, and give your opinion as to why those forms you ...

Suppose a program has a button with the caption quit

Suppose a program has a button with the caption "Quit" Suppose also that Name property of this button is btnQuit. Write a btnQuit_Click event precede that gives the user a second chance before ending the program. The prt ...

Explain how amazon and walmart companies use information

Explain how Amazon and Walmart companies use Information and Communication Technologies (ICT) in their competitive strategies. Highlight the differences in their use of ICT.

Can someone design a small program for me in java that do

Can someone design a small program for me in Java that do the following: Implement at least four classes (showing inheritance) with suitable constructors and methods to set/retrieve values of from the properties. Try to ...

Question using the apple company identify all the social

Question: Using the Apple company, identify all the social media platforms it currently uses. List all the social media platforms. List five different KPI's you could use to measure the engagement on each platform. Expla ...

At steady-state the output of a pid controller is 10ma when

At steady-state, the output of a PID controller is 10mA. When the process is upset, the set-point signal increases at a rate of 0.4 mA/min. If the controller gain, reset time, and derivative time are 3, 2 min, and 0.4 mi ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Computer Engineering Expert