Introduction to Database Management, QBE, and Relational Algebra1) Create and populate a relational database with three tables.2) Write queries with relational algebra such as union, intersect, and difference.Assignment Criteria:a) It is expected that this assignment will be of at least a 1 page of double spaced text.b) Pictures and references are not counted with these pages.c) The format should be in APA.d) This paper should have a reference page as per APA guidelines.