Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > Given the following relational schemas Stude...
Start Learning for Free
Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students?
Most Upvoted Answer
Given the following relational schemas Student (rollNo, name, age, se...
TRC Query to Obtain Department Names without Girl Students
To obtain the department names that do not have any girl students, we need to perform a TRC query on the given relational schemas. The steps to do this are as follows:
Step 1: Identify the relevant tables and columns
- We need to extract department names, so we will be using the Department table.
- We need to check if there are any girl students in a department, so we will be using the Student table and filtering on the 'sex' column.
Step 2: Write the TRC query
- We can use a subquery to get the count of girl students in each department.
- We can then use a WHERE clause to filter out departments where the count is greater than zero.
- Finally, we can select the department name from the Department table.
The TRC query will look like this:
SELECT dName FROM Department
WHERE deptId NOT IN (SELECT deptNo FROM Student WHERE sex='F' GROUP BY deptNo)
Step 3: Explanation of the query
- The subquery selects the department numbers of all girl students, groups them by department number, and returns the count of girl students in each department.
- The outer query selects the department names of all departments whose department numbers are not in the list of departments with girl students.
Step 4: Conclusion
- This TRC query will return the department names that do not have any girl students.
To obtain the department names that do not have any girl students, we need to perform a TRC query on the given relational schemas. The steps to do this are as follows:
Step 1: Identify the relevant tables and columns
- We need to extract department names, so we will be using the Department table.
- We need to check if there are any girl students in a department, so we will be using the Student table and filtering on the 'sex' column.
Step 2: Write the TRC query
- We can use a subquery to get the count of girl students in each department.
- We can then use a WHERE clause to filter out departments where the count is greater than zero.
- Finally, we can select the department name from the Department table.
The TRC query will look like this:
SELECT dName FROM Department
WHERE deptId NOT IN (SELECT deptNo FROM Student WHERE sex='F' GROUP BY deptNo)
Step 3: Explanation of the query
- The subquery selects the department numbers of all girl students, groups them by department number, and returns the count of girl students in each department.
- The outer query selects the department names of all departments whose department numbers are not in the list of departments with girl students.
Step 4: Conclusion
- This TRC query will return the department names that do not have any girl students.
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
|
|
Top Courses for Computer Science Engineering (CSE)View all
Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students?
Question Description
Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students? 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 Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students?.
Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students? 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 Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students?.
Solutions for Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students? 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 Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students? defined & explained in the simplest way possible. Besides giving the explanation of
Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students?, a detailed solution for Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students? has been provided alongside types of Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students? theory, EduRev gives you an
ample number of questions to practice Given the following relational schemas Student (rollNo, name, age, sex, deptNo, advisor) Department (deptId, dName, hod, phoneNo) Which of the following will be the TRC query to obtain the department names that do not have any girl students? 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
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup