What is the date of enrollment of the course named "Spanish"?
select t2.date_of_enrolment from courses as t1 join student_course_enrolment as t2 on t1.course_id = t2.course_id where t1.course_name = "Spanish"
What is the date of enrollment in the course named "database"?
select t2.date_of_enrolment from courses as t1 join student_course_enrolment as t2 on t1.course_id = t2.course_id where t1.course_name = "database"
What is the date of enrollment in the course named "advanced database"?
select t2.date_of_enrolment from courses as t1 join student_course_enrolment as t2 on t1.course_id = t2.course_id where t1.course_name = "advanced database"
What is the date of enrollment in the course named "operating system"?
select t2.date_of_enrolment from courses as t1 join student_course_enrolment as t2 on t1.course_id = t2.course_id where t1.course_name = "operating system"
What is the date of completion in the course named "advanced database?"
select t2.date_of_completion from courses as t1 join student_course_enrolment as t2 on t1.course_id = t2.course_id where t1.course_name = "advanced database"