What are the names and descriptions of the all courses under the "Computer Science" subject?
SELECT T1.course_name ,  T1.course_description FROM Courses AS T1 JOIN Subjects AS T2 ON T1.subject_id  =  T2.subject_id WHERE T2.subject_name  =  "Computer Science"
SELECT T1.course_name ,  T1.course_description FROM Courses AS T1 JOIN Subjects AS T2 ON T1.subject_id  =  T2.subject_id WHERE T2.subject_name  =  "Computer Science"
[{'course_name': 'database', 'course_description': 'database'}, {'course_name': 'advanced database', 'course_description': 'advanced database'}, {'course_name': 'operating system', 'course_description': 'operating system'}, {'course_name': 'data structure', 'course_description': 'data structure'}, {'course_name': 'AI', 'course_description': 'AI'}, {'course_name': 'machine learning', 'course_description': 'machine learning'}]