Computers and Technology, 02.06.2020 21:57 SiegeHatake4534
Consider the following relational schema, where the primary keys are Bold,
Students(sid, sname, address, dept_id)
Courses(cid, cname, dept_id)
Departments(dept_id, dname, college)
Grades(sid, cid, year, semester, grade)
Write the following queries in SQL. Only use the tables that are absolutely needed for the corresponding query.
1. Find the sids and snames of students who took "Database" course (i. e., cname = ‘Database’) in Fall 2019.
2. Find the average grade of all the students who took "CS327" (i. e., cid=‘CS327’) in Fall 2019. You can assume grade is a numerical attribute.
3. Find the number of distinct courses offered by each department in Fall 2019.
4. Find the sids of students who have taken at least 10 different courses offered by "Computer Science" department (i. e., dname = ‘Computer Science’).
Answers: 3
Computers and Technology, 22.06.2019 23:30
For her science class, elaine is creating a presentation on weather in the united states. she wants to make the presentation beautiful and interesting by drawing simple cloud or wave shapes. which is the best way for elaine to draw these shapes?
Answers: 1
Computers and Technology, 23.06.2019 22:20
If i uninstall nba 2k 19 from my ps4 will my career be gone forever?
Answers: 2
Computers and Technology, 24.06.2019 02:00
Write an expression that will cause the following code to print "equal" if the value of sensorreading is "close enough" to targetvalue. otherwise, print "not equal". ex: if targetvalue is 0.3333 and sensorreading is (1.0/3.0), output is:
Answers: 1
Computers and Technology, 24.06.2019 02:20
The first time a user launches the powerpoint program, which view is shown allowing the user to access recent presentations or create new presentations based on templates?
Answers: 1
Consider the following relational schema, where the primary keys are Bold,
Students(sid, snam...
Students(sid, snam...
English, 05.05.2020 03:20
English, 05.05.2020 03:20
Mathematics, 05.05.2020 03:20
History, 05.05.2020 03:20
Mathematics, 05.05.2020 03:20
Physics, 05.05.2020 03:20
Mathematics, 05.05.2020 03:20