You are writing a query about hospital encounters using the following FROM clause: FROM PAT_ENC HSP peh CLARITY_DEP dep ON peh.DEPARTMENT_ID = dep.DEPARTMENT_ID DEPARTMENT_ID is never NULL in either table, and for every DEPARTMENT_ID in PAT_ENC_HSP, there is a matching DEPARTMENT_ID in CLARITY_DEP. Assuming no additional filtering, which join type must you use? A. You must use either an INNER JOIN or a LEFT OUTER JOIN, and either would return the same results B. You must use an INNER JOIN C. You must use a LEFT OUTER JOIN D. You must use a CROSS JOIN
You are writing a query about hospital encounters using the following FROM clause: FROM PAT_ENC HSP peh CLARITY_DEP dep ON peh.DEPARTMENT_ID = dep.DEPARTMENT_ID DEPARTMENT_ID is never NULL in either table, and for every DEPARTMENT_ID in PAT_ENC_HSP, there is a matching DEPARTMENT_ID in CLARITY_DEP. Assuming no additional filtering, which join type must you use? A. You must use either an INNER JOIN or a LEFT OUTER JOIN, and either would return the same results B. You must use an INNER JOIN C. You must use a LEFT OUTER JOIN D. You must use a CROSS JOIN
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
You are writing a query about hospital encounters using the following FROM clause:
FROM PAT_ENC HSP peh
<join type> CLARITY_DEP dep ON peh.DEPARTMENT_ID = dep.DEPARTMENT_ID
DEPARTMENT_ID is never NULL in either table, and for every DEPARTMENT_ID in PAT_ENC_HSP, there is a matching DEPARTMENT_ID in CLARITY_DEP. Assuming no additional filtering, which join type must you use?
A. You must use either an INNER JOIN or a LEFT OUTER JOIN, and either would return the same results
B. You must use an INNER JOIN
C. You must use a LEFT OUTER JOIN
D. You must use a CROSS JOIN
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Recommended textbooks for you
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education