Suppose public schools have decided that they all want to stick to the same curricular system. A school may have some students who can choose to take some classes from this curricular system. A class may be chosen by many students. Now let's assume a student cannot attend or be affiliated to two schools at the same time.

At a minimum, a school should have a name and its students; a student should have a name and a collection of classes he/she is taking; a class should have a name.

The Minister of Education wants you to create a program that can do the following things: (1) Create a school or a few schools, or rather, register a school into the database. (2) In general, when creating a school, some students are assumed to be enrolled or registered accordingly. It is hard to imagine a school with no students at all. (3) When a student is enrolled, a few classes should be registered accordingly. (4) It is possible that a class is chosen by no students. (5) Create a file named 'join_filter'. In this file, you are going to write a query that does the following: find all the students that take the class of 'Machine Learning' and display all the students.

Suppose the following are the classes that make this curriculum. Computer Network, Machine Learning, Object-Oriented Design, Web Development, Discreet Structure, Operating System.

IN PYTHON