public static void Initialize(SchoolContext context) { //context.Database.EnsureCreated(); //The above line is not needed after we start using MIGRATIONS // Look for any students. if (context.Students.Any()) { return; // DB has been seeded } var students = new Student[] { new Student { FirstName = "Carson", LastName = "Alexander", EnrollmentDate = DateTime.Parse("2019-09-01") }, new Student { FirstName = "Meredith", LastName = "Alonso", EnrollmentDate = DateTime.Parse("2017-09-01") }, new Student { FirstName = "Arturo", LastName = "Anand", EnrollmentDate = DateTime.Parse("2018-09-01") }, new Student { FirstName = "Gytis", LastName = "Barzdukas", EnrollmentDate = DateTime.Parse("2017-09-01") }, new Student { FirstName = "Yan", LastName = "Li", EnrollmentDate = DateTime.Parse("2017-09-01") }, new Student { FirstName = "Peggy", LastName = "Justice", EnrollmentDate = DateTime.Parse("2016-09-01") }, new Student { FirstName = "Laura", LastName = "Norman", EnrollmentDate = DateTime.Parse("2018-09-01") }, new Student { FirstName = "Nino", LastName = "Olivetto", EnrollmentDate = DateTime.Parse("2019-09-01") } }; context.Students.AddRange(students); context.SaveChanges(); var instructors = new Instructor[] { new Instructor { FirstName = "Kim", LastName = "Abercrombie", HireDate = DateTime.Parse("1995-03-11") }, new Instructor { FirstName = "Fadi", LastName = "Fakhouri", HireDate = DateTime.Parse("2002-07-06") }, new Instructor { FirstName = "Roger", LastName = "Harui", HireDate = DateTime.Parse("1998-07-01") }, new Instructor { FirstName = "Candace", LastName = "Kapoor", HireDate = DateTime.Parse("2001-01-15") }, new Instructor { FirstName = "Roger", LastName = "Zheng", HireDate = DateTime.Parse("2004-02-12") } }; context.Instructors.AddRange(instructors); context.SaveChanges(); var officeAssignments = new OfficeAssignment[] { new OfficeAssignment { InstructorID = instructors.Single(i => i.LastName == "Fakhouri").ID, Location = "Smith 17" }, new OfficeAssignment { InstructorID = instructors.Single(i => i.LastName == "Harui").ID, Location = "Gowan 27" }, new OfficeAssignment { InstructorID = instructors.Single(i => i.LastName == "Kapoor").ID, Location = "Thompson 304" }, }; context.OfficeAssignments.AddRange(officeAssignments); context.SaveChanges(); var departments = new Department[] { new Department { Name = "English", Budget = 350000, StartDate = DateTime.Parse("2007-09-01"), InstructorID = instructors.Single(i => i.LastName == "Abercrombie").ID }, new Department { Name = "Mathematics", Budget = 100000, StartDate = DateTime.Parse("2007-09-01"), InstructorID = instructors.Single(i => i.LastName == "Fakhouri").ID }, new Department { Name = "Engineering", Budget = 350000, StartDate = DateTime.Parse("2007-09-01"), InstructorID = instructors.Single(i => i.LastName == "Harui").ID }, new Department { Name = "Economics", Budget = 100000, StartDate = DateTime.Parse("2007-09-01"), InstructorID = instructors.Single(i => i.LastName == "Kapoor").ID } }; context.Departments.AddRange(departments); context.SaveChanges(); var courses = new Course[] { new Course { CourseID = 1050, Title = "Chemistry", Credits = 3, DepartmentID = departments.Single(s => s.Name == "Engineering").DepartmentID }, new Course { CourseID = 4022, Title = "Microeconomics", Credits = 3, DepartmentID = departments.Single(s => s.Name == "Economics").DepartmentID }, new Course { CourseID = 4041, Title = "Macroeconomics", Credits = 3, DepartmentID = departments.Single(s => s.Name == "Economics").DepartmentID }, new Course { CourseID = 1045, Title = "Calculus", Credits = 4, DepartmentID = departments.Single(s => s.Name == "Mathematics").DepartmentID }, new Course { CourseID = 3141, Title = "Trigonometry", Credits = 4, DepartmentID = departments.Single(s => s.Name == "Mathematics").DepartmentID }, new Course { CourseID = 2021, Title = "Composition", Credits = 3, DepartmentID = departments.Single(s => s.Name == "English").DepartmentID }, new Course { CourseID = 2042, Title = "Literature", Credits = 4, DepartmentID = departments.Single(s => s.Name == "English").DepartmentID }, }; context.Courses.AddRange(courses); context.SaveChanges(); //define the below table only after creating the courses table var courseInstructors = new CourseAssignment[] { new CourseAssignment { CourseID = courses.Single(c => c.Title == "Chemistry").CourseID, InstructorID = instructors.Single(i => i.LastName == "Kapoor").ID }, new CourseAssignment { CourseID = courses.Single(c => c.Title == "Chemistry").CourseID, InstructorID = instructors.Single(i => i.LastName == "Harui").ID }, new CourseAssignment { CourseID = courses.Single(c => c.Title == "Microeconomics").CourseID, InstructorID = instructors.Single(i => i.LastName == "Zheng").ID }, new CourseAssignment { CourseID = courses.Single(c => c.Title == "Macroeconomics").CourseID, InstructorID = instructors.Single(i => i.LastName == "Zheng").ID }, new CourseAssignment { CourseID = courses.Single(c => c.Title == "Calculus").CourseID, InstructorID = instructors.Single(i => i.LastName == "Fakhouri").ID }, new CourseAssignment { CourseID = courses.Single(c => c.Title == "Trigonometry").CourseID, InstructorID = instructors.Single(i => i.LastName == "Harui").ID }, new CourseAssignment { CourseID = courses.Single(c => c.Title == "Composition").CourseID, InstructorID = instructors.Single(i => i.LastName == "Abercrombie").ID }, new CourseAssignment { CourseID = courses.Single(c => c.Title == "Literature").CourseID, InstructorID = instructors.Single(i => i.LastName == "Abercrombie").ID }, }; context.CourseAssignments.AddRange(courseInstructors); context.SaveChanges(); var enrollments = new Enrollment[] { new Enrollment { StudentID = students.Single(s => s.LastName == "Alexander").ID, CourseID = courses.Single(c => c.Title == "Chemistry").CourseID, Grade = Grade.A }, new Enrollment { StudentID = students.Single(s => s.LastName == "Alexander").ID, CourseID = courses.Single(c => c.Title == "Microeconomics").CourseID, Grade = Grade.C }, new Enrollment { StudentID = students.Single(s => s.LastName == "Alexander").ID, CourseID = courses.Single(c => c.Title == "Macroeconomics").CourseID, Grade = Grade.B }, new Enrollment { StudentID = students.Single(s => s.LastName == "Alonso").ID, CourseID = courses.Single(c => c.Title == "Calculus").CourseID, Grade = Grade.B }, new Enrollment { StudentID = students.Single(s => s.LastName == "Alonso").ID, CourseID = courses.Single(c => c.Title == "Trigonometry").CourseID, Grade = Grade.B }, new Enrollment { StudentID = students.Single(s => s.LastName == "Alonso").ID, CourseID = courses.Single(c => c.Title == "Composition").CourseID, Grade = Grade.B }, new Enrollment { StudentID = students.Single(s => s.LastName == "Anand").ID, CourseID = courses.Single(c => c.Title == "Chemistry").CourseID }, new Enrollment { StudentID = students.Single(s => s.LastName == "Anand").ID, CourseID = courses.Single(c => c.Title == "Microeconomics").CourseID, Grade = Grade.B }, new Enrollment { StudentID = students.Single(s => s.LastName == "Barzdukas").ID, CourseID = courses.Single(c => c.Title == "Chemistry").CourseID, Grade = Grade.B }, new Enrollment { StudentID = students.Single(s => s.LastName == "Li").ID, CourseID = courses.Single(c => c.Title == "Composition").CourseID, Grade = Grade.B }, new Enrollment { StudentID = students.Single(s => s.LastName == "Justice").ID, CourseID = courses.Single(c => c.Title == "Literature").CourseID, Grade = Grade.B } }; foreach (Enrollment e in enrollments) { var enrollmentInDataBase = context.Enrollments.Where( s => s.Student.ID == e.StudentID && s.Course.CourseID == e.CourseID).SingleOrDefault(); if (enrollmentInDataBase == null) { context.Enrollments.Add(e); } } context.SaveChanges(); }