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For the following relational model: Student (sid, fname, lname, gpa) Course ( cid, code, name, credithours) Enrolled (sid, cid,grade) Write SQL queries for the following:

For the following relational model:

Student(sid, fname, lname, gpa) Course ( cid, code, name, credithours) Enrolled (sid, cid,grade)

Write SQL queries for the following:

Find all students that have enrolled in database and network courses
Find all the students that have (A or more) at least once

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