[Answered] Which one of the following is(are) the core retrieval operation(s) for relational databases? A) ...

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Author Question: Which one of the following is(are) the core retrieval operation(s) for relational databases? A) ... (Read 60 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

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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

Excellent

billybob123

Member
Posts: 336

Reply 3 on: Yesterday

YES! Correct, THANKS for helping me on my review

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