Question: What the project operation (RA) is doing/returns? (Select multiple answers when applicable and explain fully your answer.) Keeps all attributes that are not NULL. Keeps

What the project operation (RA) is doing/returns? (Select multiple answers when applicable and explain fully your answer.)

  1. Keeps all attributes that are not NULL.
  2. Keeps all attributes that belong to relation and are listed in selection list.
  3. Keeps only attributes that are candidate keys.
  4. Keeps only primary keys.

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 General Management Questions!

Q:

Q19. Project operation eliminates duplicates because: (Select multiple answers when applicable and explain fully your answer.) It keeps DB integrity Because it is a set operation Because it is...

Q:

Union operation requires (RA) : (Select multiple answers when applicable and explain fully your answer.) A. Two relations to be related via foreign and primary key B. Two relations to have the same...

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:

IFSM 300 Final Assessment Exam NOTE: As for all work in this class, the final exam must be original work developed by the student solely for use in this class and must conform to UMUC's academic...

Q:

Analysis of lean construction practices at Abu Dhabi construction industry Raid Al-Aomar 1 Abstract Question: What are the current construction wastes in Abu Dhabi (AD) construction industry and what...

Q:

answer the question clearly You are building a flight-control system for which a convincing safety case must be made. Would you assign the tasks of safety requirements engineering, test case...

Q:

Read the information in all photos and answer the questions using what you read. 2.3 Students treated as customers Gruber et al. (2010), in their research paper, treated students as customers in the...

Q:

Abstract This article describes CRISP-DM (Cross-Industry Sandand Process for Data Mining), a non-proprietary, documented, and freely available data mining model. Dezeloped by indias- try leaders...

Q:

End of Chapter 1 Answers 1) Self-acceptance is getting to move on despite what people thinks about us, it is more of self- esteem, white self-esteem is how important we see our self. It is good to...

Q:

Students will review examples and evaluate them. Review these documents and evaluate them (click on the link): https://1drv.ms/w/s!AoYu6G3CLyuakjVCGipkRkNSBVUB?e=jrPXX6...

Q:

Use a graph to estimate the -coordinates of the points of intersection of the given curves. Then use this information to estimate the volume of the solid obtained by rotating about the axis the...

Q:

Write an police report narrative based on a news article account of an incident, using the outline process mentioned in the chapter. (Use the Internet to search for any recent major crime.) Things to...

Q:

What is not a reason for creating recurring transaction? a . To minimize accounting entry errors b . To eliminate the need for supervision of junior accounting staff c . Removes the need to re -...

Q:

Case Greenbuilders Pte Lid ("GPL") is a local construction company which specialises in providing bespoke Design and Build construction services for private residential homes that are designed to be...