Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Which of the following statements is NOT true about semi - joins, anti - joins, and nested queries in SQL ? Select all that applies.

Which of the following statements is NOT true about semi-joins, anti-joins, and nested queries in SQL? Select all that applies.
Group of answer choices
(A) Nested queries can always be used to achieve the same results as semi-joins and anti-joins.
(B) Semi-joins return rows from the inner table that have matching rows in the inner table based on a join condition.
(C) Anti-joins return all rows from both tables, regardless of the join condition.
(D) Relational algebra expressions using semi-join and anti-join operators can sometimes provide a clearer representation of the query logic compared to nested queries.
(E) Depending on the database system, using semi-join or anti-join might lead to a more efficient execution plan than nested queries.

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Introductory Relational Database Design For Business With Microsoft Access

Authors: Jonathan Eckstein, Bonnie R. Schultz

1st Edition

1119329418, 978-1119329411

More Books

Students also viewed these Databases questions