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 20 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
Wow, this really help

raenoj

  • Member
  • Posts: 340
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

The FDA recognizes 118 routes of administration.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Oldowan tools are simple flake tools struck from a core. Oldowan tools are simple flake tools struck from a core.
The Split-Brain Operation The Split-Brain Operation
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 ...
Catalytic core of sirtuins is evolutionarily conserved Catalytic core of sirtuins is evolutionarily conserved
Effects of Retrieval Practice on Predicted and Actual Memory Performance Effects of Retrieval Practice on Predicted and Actual Memory Performance
The 20 CODIS Core Locia The 20 CODIS Core Locia
Video: Language Areas Animation

For a complete list of videos, visit our video library