edrrezend / collegedb_modeling

Relational database modeling to help college management.

Relational database for college management

Enviroment:

Microsoft SQL Server + BrModelo

Objective:

To perform centralized control of students, teachers, courses, disciplines, academic history, and classes.

Project phases:

• Requirements gathering

• Entity and relationship identification

• E-R model

• E-R diagram

• Normalization

• Implementation

• Basic tests

Business Rules:

• A student can only be enrolled in one course at a time

• Students have a unique identification code (RA)

• Courses are composed of disciplines

• Disciplines can be mandatory or elective, depending on the course

• Disciplines belong to specific departments

• Each discipline has a unique identification code

• Students can freeze their enrollment, not being enrolled in any discipline for the semester

• In each semester, each student can enroll in a maximum of 9 disciplines

• A student can fail a maximum of 3 times in the same discipline.

• The college will have a maximum of 3000 students enrolled simultaneously, in 10 different courses

• 300 new students enter each year

• There are 90 total available disciplines

• An academic history shows all the disciplines taken by a student, including final grades, attendance, and the period when the course was taken

• Teachers can be registered even if they are not teaching disciplines

• There are 40 teachers working in the school

• Each teacher will teach a maximum of 4 different disciplines

• Each teacher is linked to a department

• Teachers are identified by a teacher code

Identifying entities:

• Students

• Teachers

• Disciplines

• Departments

• Courses

• Academic history

• Depends (self-relationship of Disciplines)

Identifying associative entities:

• teacher_discipline

• course_discipline

• discipline_history

Creating conceptual, logical, and physical models:

• Entities

• Relationships

• Cardinalities

• Associative Entities

• Attributes

• Constraints

• Primary and foreign keys

Conceptual Model:

Logical Model:

Physical Model:

collegedb_tables.txt