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الموضوع: اريد المساعد في حل هذا السؤال

  1. #1
    اضغط هنا للدورات الهندسية
    تاريخ التسجيل
    Mar 2010
    المشاركات
    8

    help اريد المساعد في حل هذا السؤال

    اريد المساعدة ضروي

     


  2. #2
    اضغط هنا للدورات الهندسية
    تاريخ التسجيل
    Mar 2010
    المشاركات
    8

    help اريد المساعدة في حل هذا السؤال

    Udemy
    Q1.
    v Consider a database that records the grades of students in different exams of different course offerings.
    a) assume that course offerings include time, room; and can be identified uniquely by course_no, semester, year, section_no.
    b) students, including student-id, name, and program;
    c) exam, including eid (optional), name, place, time.
    Furthermore, grades of students in different exams of course offerings must be modeled.
    v Construct an E-R diagram that models exams as entities, and uses a ternary relationship, for the above database.


    Q2. A database is to be designed for a college to monitor students’ progress throughout their course of study. The students are reading for a degree (such as BA, BA(Hons) MSc, etc) within the framework of the modular system. The college provides a number of module, each being characterised by its code , title, credit value, module leader, teaching staff and the department they come from. A module is co-ordinated by a module leader who shares teaching duties with one or more lecturers. A lecturer may teach (and be a module leader for) more than one module. Students are free to choose any module they wish but the following rules must be observed: some modules require pre-requisites modules and some degree programmes have compulsory modules. The database is also to contain some information about students including their numbers, names, addresses, degrees they read for, and their past performance (i.e. modules taken and examination results).

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