Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > Consider the following relation schema pertai...
Start Learning for Free
Consider the following relation schema pertaining to a students database:
Student (rollno, name, address)
Enroll (rollno, courseno, coursename)
Enroll (rollno, courseno, coursename)
where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?
- a)8, 0
- b)120, 8
- c)960, 8
- d)960, 120
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Consider the following relation schema pertaining to a students databa...
The result of the natural join is the set of all combinations of tuples in R and S that are equal on their common attribute names. What is the maximum possible number of tuples? The result of natural join becomes equal to the Cartesian product when there are no common attributes. The given tables have a common attribute, so the result of natural join cannot have more than the number of tuples in larger table.
What is the maximum possible number of tuples? It might be possible that there is no rollnumber common. In that case, the number of tupples would be 0.
Most Upvoted Answer
Consider the following relation schema pertaining to a students databa...
Given Information:
The relation schema for a student database is as follows:
- Student (rollno, name, address)
- Enroll (rollno, courseno, coursename)
The primary keys are shown underlined.
The number of tuples in the Student table is 120.
The number of tuples in the Enroll table is 8.
Objective:
To determine the maximum and minimum number of tuples that can be present in the result of the natural join operation (Student * Enroll).
Solution:
The natural join operation combines tuples from two relations based on matching values of attributes. In this case, the natural join will be performed on the "rollno" attribute, which is common to both the Student and Enroll relations.
To find the maximum and minimum number of tuples in the result of the natural join, we need to consider the worst-case scenarios.
Maximum Number of Tuples:
The maximum number of tuples in the result of the natural join is obtained when every tuple in the Student relation matches with every tuple in the Enroll relation. In this case, each tuple in the Student relation will be paired with each tuple in the Enroll relation, resulting in a maximum possible number of tuples in the result.
Since there are 120 tuples in the Student relation and 8 tuples in the Enroll relation, the maximum number of tuples in the result will be 120 * 8 = 960.
Minimum Number of Tuples:
The minimum number of tuples in the result of the natural join is obtained when there are no matching tuples between the Student and Enroll relations. In this case, the natural join will result in an empty set, i.e., 0 tuples.
Therefore, the maximum and minimum number of tuples that can be present in (Student * Enroll) are 960 and 0, respectively.
Answer:
The maximum and minimum number of tuples that can be present in (Student * Enroll) are 960 and 0, respectively. The correct option is A.
The relation schema for a student database is as follows:
- Student (rollno, name, address)
- Enroll (rollno, courseno, coursename)
The primary keys are shown underlined.
The number of tuples in the Student table is 120.
The number of tuples in the Enroll table is 8.
Objective:
To determine the maximum and minimum number of tuples that can be present in the result of the natural join operation (Student * Enroll).
Solution:
The natural join operation combines tuples from two relations based on matching values of attributes. In this case, the natural join will be performed on the "rollno" attribute, which is common to both the Student and Enroll relations.
To find the maximum and minimum number of tuples in the result of the natural join, we need to consider the worst-case scenarios.
Maximum Number of Tuples:
The maximum number of tuples in the result of the natural join is obtained when every tuple in the Student relation matches with every tuple in the Enroll relation. In this case, each tuple in the Student relation will be paired with each tuple in the Enroll relation, resulting in a maximum possible number of tuples in the result.
Since there are 120 tuples in the Student relation and 8 tuples in the Enroll relation, the maximum number of tuples in the result will be 120 * 8 = 960.
Minimum Number of Tuples:
The minimum number of tuples in the result of the natural join is obtained when there are no matching tuples between the Student and Enroll relations. In this case, the natural join will result in an empty set, i.e., 0 tuples.
Therefore, the maximum and minimum number of tuples that can be present in (Student * Enroll) are 960 and 0, respectively.
Answer:
The maximum and minimum number of tuples that can be present in (Student * Enroll) are 960 and 0, respectively. The correct option is A.
Attention Computer Science Engineering (CSE) Students!
To make sure you are not studying endlessly, EduRev has designed Computer Science Engineering (CSE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Computer Science Engineering (CSE).
|
Explore Courses for Computer Science Engineering (CSE) exam
|
|
Similar Computer Science Engineering (CSE) Doubts
Top Courses for Computer Science Engineering (CSE)View all
Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer?
Question Description
Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer?.
Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer?.
Solutions for Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Computer Science Engineering (CSE).
Download more important topics, notes, lectures and mock test series for Computer Science Engineering (CSE) Exam by signing up for free.
Here you can find the meaning of Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider the following relation schema pertaining to a students database:Student (rollno, name, address)Enroll (rollno, courseno, coursename)where the primary keys are shown underlined. The number of tuples in the Student and Enroll tables are 120 and 8 respectively. What are the maximum and minimum number of tuples that can be present in (Student * Enroll), where '*' denotes natural join ?a)8, 0b)120, 8c)960, 8d)960, 120Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Computer Science Engineering (CSE) tests.
|
|
Explore Courses for Computer Science Engineering (CSE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup