Consider the relations Courses1, Courses2, Enrollment and Students. Courses cid ename Location Al Calculus LI A2 Algebra L2 A5 English L3 Student(sid, sname, age, level) Courses2 cid A5 BI B2 Classroom L3 L4 Computing L5 b) Courses 1-Courses2 name English History (1) Give the results of the following relational algebra expressions: a) Teid ( name='History' OR 'Computing (Courses2)) c) Courses Courses2 Enrollment sid cid 101 Al 102 A5 103 В1 102 Al 102 A2 d) Courses1 MEnrollment
Consider the relations Courses1, Courses2, Enrollment and Students. Courses cid ename Location Al Calculus LI A2 Algebra L2 A5 English L3 Student(sid, sname, age, level) Courses2 cid A5 BI B2 Classroom L3 L4 Computing L5 b) Courses 1-Courses2 name English History (1) Give the results of the following relational algebra expressions: a) Teid ( name='History' OR 'Computing (Courses2)) c) Courses Courses2 Enrollment sid cid 101 Al 102 A5 103 В1 102 Al 102 A2 d) Courses1 MEnrollment
Principles of Information Systems (MindTap Course List)
12th Edition
ISBN:9781285867168
Author:Ralph Stair, George Reynolds
Publisher:Ralph Stair, George Reynolds
Chapter5: Database Systems And Applications
Section: Chapter Questions
Problem 4PSE: Using a graphics program, develop an entity-relationship diagram for a database application for an...
Related questions
Question
![Consider the relations Courses1, Courses2,
_Enrollment
and Students.
Courses1
Location
cid ename
Al Calculus
LI
A2 Algebra L2
A5 English
L3
Student(sid, sname, age, level)
Courses2
cid
A5
BI
B2
name
English
History
b) Courses 1-Courses2
L3
L4
Computing L5
c) Courses Courses2
Classroom
d) Courses1 Enrollment
(1) Give the results of the following relational
algebra expressions:
a) Teid ( name='History' OR 'Computing (Courses2))
e) Enrollment / Teid (Courses1)
Enrollment
cid
Al
A5
sid
101
102
103
102
102
B1
Al
A2
(2) Write the following query in Relational Algebra.
a) Find the sids of students who have enrolled in
_course Calculus.
b) Find the names of students who have enrolled in
course Calculus.
_c) Find the names of students who have enrolled at
least one course.
d) Find the names of students who have enrolled in
_Calculus or Algebra.
e) Find the sids of students who have enrolled in all
courses (both Courses1 and Courses2).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5cca938d-c512-48fc-adb3-1f881d8fa97e%2Fa0ad3dcc-b2eb-4557-8d5c-05341b2d36c4%2Fg3l7ml_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Consider the relations Courses1, Courses2,
_Enrollment
and Students.
Courses1
Location
cid ename
Al Calculus
LI
A2 Algebra L2
A5 English
L3
Student(sid, sname, age, level)
Courses2
cid
A5
BI
B2
name
English
History
b) Courses 1-Courses2
L3
L4
Computing L5
c) Courses Courses2
Classroom
d) Courses1 Enrollment
(1) Give the results of the following relational
algebra expressions:
a) Teid ( name='History' OR 'Computing (Courses2))
e) Enrollment / Teid (Courses1)
Enrollment
cid
Al
A5
sid
101
102
103
102
102
B1
Al
A2
(2) Write the following query in Relational Algebra.
a) Find the sids of students who have enrolled in
_course Calculus.
b) Find the names of students who have enrolled in
course Calculus.
_c) Find the names of students who have enrolled at
least one course.
d) Find the names of students who have enrolled in
_Calculus or Algebra.
e) Find the sids of students who have enrolled in all
courses (both Courses1 and Courses2).
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
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
![Principles of Information Systems (MindTap Course…](https://www.bartleby.com/isbn_cover_images/9781285867168/9781285867168_smallCoverImage.gif)
Principles of Information Systems (MindTap Course…
Computer Science
ISBN:
9781285867168
Author:
Ralph Stair, George Reynolds
Publisher:
Cengage Learning
![Principles of Information Systems (MindTap Course…](https://www.bartleby.com/isbn_cover_images/9781285867168/9781285867168_smallCoverImage.gif)
Principles of Information Systems (MindTap Course…
Computer Science
ISBN:
9781285867168
Author:
Ralph Stair, George Reynolds
Publisher:
Cengage Learning