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السلام عليكم


اتمنى تساعدوني في رسم er لقاعدة البيانات انا مبتدءه فيها وما اعرف يعني شلون يا ليت لو احد يشوفلي اياه

تراه بالانجليزي بس لا تخرعوني الكلام سهل بس مشكلتي ما اعرف اربط العلاقات !!




Consider the following set requirements for a UNIVERSITY
database that is used to keep track of students' transcripts.
A- the UNIVERSITY keep track of each student' name ,student number social security number , current address and phone, birth data, sex ,class(freshman ,sophomore,….,graduate),major department, (if any),and degree program (B.A,B.S,…..,PhD.) some user applications need to refer to the city, state and ZIP code of the student's permanent address and to the student's last name .both social security number and student number have unique values for each student .
B- Each department is described by name, department code, office number, office number and college .both name and code have unique value for each department.
C- Each course has a course name, description, course number, number of semester hours, level, and offering department, the value of the course number is unique for each course.
D- Each section has an instructor, semester, year, course, and section number. The section number distinguishes section of the same course that are taught during the same semester/years, its values are 1.2.3… up to the number of section taught during each semester.
E- A grade report has a student, section, letter grade, and numeric
(0, 1,2,3,or 4).
Design an ER schema for this application, and draw an ER diagram for the schema. Specify key attributes of each entity type, and structural constraints on each relationship type. Note any unspecified requirements, and make appropriate assumptions to make the specification complete + mappingrelationship (ER)


لا تبخلون علي