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 78 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 :)

patma1981

  • Member
  • Posts: 292
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Primates use their space in a variety of ways: home ranges, core areas, and territories. Primates use their space in a variety of ways: home ranges, core areas, and territories.
Oldowan tools are simple flake tools struck from a core. Oldowan tools are simple flake tools struck from a core.
A levallois core from Kapedo Tuffs, Kenya dates about 130,000 years ago. A levallois core from Kapedo Tuffs, Kenya dates about 130,000 years ago.
The Split-Brain Operation The Split-Brain Operation
Effects of Retrieval Practice on Predicted and Actual Memory Performance Effects of Retrieval Practice on Predicted and Actual Memory Performance
Bacterial RNA polymerase core plus a sigma Bacterial RNA polymerase core plus a sigma
Video: Major Elements in Biological Molecules: Nucleic acids

For a complete list of videos, visit our video library