an ER-Diagram for a University database. A university consists departments. Each department offers several courses. A fe s make up each course. Students enroll in a particular course ar odules towards the completion of that course. Each module
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- Draw an E-R diagram for the description below. Suppose that you are asked to model a database including all pharmaceutical companies, their drugs, and all pharmacies. Each pharmaceutical company is identified by its name and has a phone number. For each drug, the trade name (e.g., Acetaminophen) and formula must be recorded. Each drug is sold by only one pharmaceutical company, and the trade name identifies a drug uniquely from among the products of that company. If a pharmaceutical company stops production, we do not need to keep track of its products any longer. Each pharmacy has an identifier name, address, and phone number. Each pharmacy sells several drugs. A drug could be sold at several pharmacies, and the price could vary from one pharmacy to another.Consider a MAIL_ORDER database in which employees take orders for parts from customers. The data requirements are summarized as follows: o The mail order company has employees, each identified by a unique employee number, first and last name, and Zip Code. o Each customer of the company is identified by a unique customer num, first and last name, and Zip Code. o Each part is identified by a unique part number, a part name, price, and quantity. o Each order placed by a customer is taken by an employee and is given a unique order number. Each order contains specified quantities of one or more parts. Each order has a date of receipt as well as an expected ship date. The actual ship date is also recorded. Design an Entity-Relationship diagram for the above environment. Please indicate Cardinality Constraints and Participation ConstraintsConsider a MAIL_ORDER database in which employees take orders for parts from customers. The data requirements are summarized as follows: o The mail order company has employees, each identified by a unique employee number, first and last name, and Zip Code. o Each customer of the company is identified by a unique customer num, first and last name, and Zip Code. o Each part is identified by a unique part number, a part name, price, and quantity. o Each order placed by a customer is taken by an employee and is given a unique order number. Each order contains specified quantities of one or more parts. Each order has a date of receipt as well as an expected ship date. The actual ship date is also recorded. Design an Entity-Relationship diagram for the above environment.
- Consider a database used to record the marks that students get in different exams ofdifferent course offerings (sections). Construct an E-R diagram that models exams as entities, anduses a ternary relationship, for the databaseIn modeling a database for university setting, students and classes have a ____ relationship. one-to-one one-to-many many-to-one many-to-manyImagine a database that stores records of what students are enrolled in what class, and what teachers are teaching those class. Just in words, Give an example of one to one relationship in the context of a student class database.
- 3- Consider a database for a university system that needs to store information about students,courses, and instructors. Each student can enroll in multiple courses, and each course can havemultiple instructors. Normalize the following schema to Third Normal Form (3NF), and showyour steps in between (1NF, 2NF).Students (StudentID, FirstName, LastName, CourseID, InstructorID)Courses (CourseID, CourseName, InstructorID)Instructors (InstructorID, FirstName, LastName)4- To keep track of office furniture, computers, printers, and other office equipment, the FOUNDITCompany uses the table structure shown below.a. Given that information, write the relational schema and draw the dependency diagram.Make sure that you label the transitive and/or partial dependencies.b. Write the relational schema and create a set of dependency diagrams that meet 3NFrequirements. Rename attributes to meet the naming conventions, and create newentities and attributes as necessary.Mapping this class diagram to a relational database during the design phase of the Software development (don't draw ER diagram, Just tables)Consider a database that includes the entity sets student, course, and sectionfrom the university schema and that additionally records the marks that studentsreceive in different exams of different sections. Construct an alternative E-R diagram that uses only a binary relationship between student and section. Make sure that only one relationship exists between a particular student and section pair, yet you can represent the marks that a student gets in different exams.
- Today almost every commercial database is based on O the hierarchical model O the linked-list model O the object-oriented model lists the relational model Given the relations: STUDENT (SID. StudentName, Major, AdvisorID) ADVISOR (AdvisorID, AdvisorName, Office, Phone) such that each student is assigned to one advisor, which of the following is true? O Major is a candidate key. O Phone is a candidate key. AdvisorName is a determinant. O AdvisorID is a foreign key. O SID is both a primary key and a foreign key.Draw an EER diagram for AIRLINE relational database. According to model, the following requirements are satisfied:The AIRLINE relational database schema shown in the above figure describes a database for airlineflight information. Each FLIGHT is identified by a Flight_number, and consists of one or moreFLIGHT_LEGs with Leg_numbers 1, 2, 3, and so on. Each FLIGHT_LEG has scheduled arrival anddeparture times, airports, and one or more LEG_INSTANCEs—one for each Date on which the flighttravels. FAREs are kept for each FLIGHT. For each FLIGHT_LEG instance, SEAT_RESERVATIONs are kept,as are the AIRPLANE used on the leg and the actual arrival and departure times and airports. AnAIRPLANE is identified by an Airplane_id and is of a particular AIRPLANE_TYPE. CAN_LAND relatesAIRPLANE_TYPEs to the AIRPORTs at which they can land. An AIRPORT is identified by an Airport_code.Draw an ER Diagram of the Library Database. Draw an EER Diagram of the Library Database. Include look near notations, and show cardinality. Make sure to point out the primary and foreign keys.