takes ID sec il student /D dept ame tot cned section course advisor Lid departmenf sec i litle dept name credits building budget time slot 00w time_slot id end time instructor classroom dept ame eaches ID cipacity Express answers to 3-9 in relational algebra. Your queries should NOT include unneeded relations. What is the difference (if any) between the following three queries? (5 points) | |course id, sec-id( semester-"Spring"A year-2019 (section)) Icourse id, sec id(O semester- "Spring" A year - 2019 (takes)) | |course id, sec-id( semester-"Spring"A year-2019 (teaches)) Why does the following query fail to list all of the students who have taken/are taking a course taught by Jeremy Blum? (5 points) 11 student name, studentID( student D, takes D, teaches Dd name="Jeremy Blum, (instructor))