This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which one of the following is(are) the core retrieval operation(s) for relational databases? A) ... (Read 69 times)

cookcarl

  • Hero Member
  • *****
  • Posts: 539
on: Jul 7, 2018
Which one of the following is(are) the core retrieval operation(s) for relational databases?
 
  A) Joining B) Selection
  C) Projection D) All of the above

Question 2

In a query with a subquery, outer subquery always executes first.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ktidd

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jul 7, 2018
Answer to Question 1

D

Answer to Question 2

FALSE


cookcarl

  • Member
  • Posts: 539
Reply 2 on: Jul 7, 2018
Great answer, keep it coming :)

Perkypinki

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

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

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

The pressure cap should be checked for proper operation using a pressure tester as part of the ... The pressure cap should be checked for proper operation using a pressure tester as part of the ...
Core Concepts in Sociology, Second Canadian Edition, 2/E (Lindsey, Beach, Ravelli) Core Concepts in Sociology, Second Canadian Edition, 2/E (Lindsey, Beach, Ravelli)
Effects of Retrieval Practice on Predicted and Actual Memory Performance Effects of Retrieval Practice on Predicted and Actual Memory Performance
Core Concepts in Pharmacology Core Concepts in Pharmacology
The nucleosome core particle derived from X-ray crystal analysis The nucleosome core particle derived from X-ray crystal analysis
Bacterial RNA polymerase core plus a sigma Bacterial RNA polymerase core plus a sigma
Video: Blood Flow through the Human Heart

For a complete list of videos, visit our video library