Draw a conceptual data model. For each scenario Use the model constructs Be sure to include all appropriate completeness constraints, disjointness constraints, and subtype indicators in your conceptual data model.

1)Urban Natural Yardcare (UNY) has residential and business clients. Attributes of residential clients include UNYClientNumber, UNYClientName (composed of FirstName, MiddleInitial, and LastName), UNYClientAddress (composed of Street, City, State, and ZipCode), and UNYMonthlyRate. Attributes of business clients include UNYClientNumber, UNYBusinessName, UNYClientAddress (composed of Street, City, State, and ZipCode), UNYSeasonalRate, and UNYDiscount. There are no other types of clients. There are a few clients who are both residential and commercial clients.

2)The Eastern Iowa Brass Band (EIBB) performs in a number of different cities each year. EIBB employs a number of different musicians each of whom performs in many, but not all, of the songs that EIBB plays in its concerts. Each song is played by one or more musician, and each musician performs in one or more song. Attributes of musician include EIBBMusicianID, EIBBMusicianName (composed of FirstName, MiddleInitial, and LastName), EIBBBirthdate, EIBBAge, EIBBSalary, and EIBBInstruments. Many musicians play more than one instrument. Attributes of song include EIBBSongID, EIBBSongName, EIBBComposer, and EIBBDuration. A concert consists of one or more songs. Attributes of concert include EIBBConcertNumber, EIBBStartDate, EIBBEndDate, and EIBBCity. A song can be included in one or more concert.

3)The Bismark Community School (BCS) offers a variety of classes. BCS keeps track of the classes it offers as well as its teachers and students. Attributes of class include BCSClassNumber, BCSStartDate, BCSEndDate, BCSStart Time, and BCSTuition. Attributes of teacher include BCSTeacherNumber, BCSTeacherName (composed of FirstName, MiddleInitial, and LastName), BCSSalaryPerClass, and BCSSkills. Many teachers have more than one skill. Attributes of student include BCSStudentNumber, BCSStudentName (composed of FirstName, MiddleInitial, and LastName), BCSStudentAddress (composed of Street, City, State, and ZipCode), BCSDateOfBirth, and BCSAge. Students can take more than 1 class, but must take at least 1 class. Each class can have multiple students, but must have at least one student. A single teacher teaches each class, and teachers can teach multiple classes.