BADR MOUSSADEK

Case study #2: Database application using Access 2007

Table information:

In this example we will have a class of five students (as a simple), the table will contain all the students name. The rest of the columns will contain the student information like date of birth, majoring after finishing his/her degree, in which class level (semester) his/her currently studying, address, and lastly the student contact number. In this table you will be able to know much information about the student within a click. The idea is a combination between the book examples and my degree study (Business Administration).

1- Student Table

Student name Date of birth Major Class Level Student address Contact #Badr Moussadek 01.07.1979 Accounting 2nd semester 2301 Kelly st, Ottawa.

ON K2H 6H5(613) 225-2345

Hassan Bouzidi 12.10.1982 Marketing 1st semester 209 Baseline st, Ottawa. ON K1G 8V7

(613) 334-2130

Saif Elmeziati 23.09.1980 Finance 3rd semester 3210 carling, Quebec. QB B2C 4Y6

(613) 304-8876

David Smith 30.12.1978 Human resources 2nd semester 412 Orleans, Montreal. QB C2H 4J6

(613) 904-6654

Hassan Majrashi 13.08.1984 Accounting 2nd semester 432 Park, Vancouver. BC T3H 0V8

(613) 137-3333

2- Course Table

Course code Professor Course name Room Teaching Date ACC2110 Bill Arthur Accounting WB 110 Monday & FridayBUS2302 Tyler McGyll Technology WT366 Tuesday & MondayECO2302 Omer Sher Economy WP 214 Friday & WednesdayENL1823 Cynthia Powel Communication WP 210 Wednesday & MondayMKT3216 Mary Hamilton Marketing WT 211 Monday & Thursday

3- Enrollment Table

Student Course code Course code 2 Courses taken Total coursesBadr Moussadek ACC2110 ACC2311 5 36Hassan Bouzidi BUS2301 BUS2302 7 36Saif Elmeziati ECO2302 ECO2306 3 24David Smith ENL1821 ENL1823 4 24Hassan Majrashi MKT3210 MKT3216 4 24

Unfortunately the above tables can cause many problems for the users; for instance, if the name of a student entered with one mistake for the second time the user will not notice that the student has been entered in the data tables twice (in access will show you the error message or even Excel). Furthermore, if we want to know which professor is teaching X student, we will have to look in both tables (table 1 and 2). As a simple it is easy but in a long list of students that might be impossible. Other problem that might occur is when one student drops one course (accounting for example) I have to change both tables (1 and 3) to delete the name and data of that particular student. The forth example is when student want to change professors or date (if he/she has a part time job) to suit her working time I will need to change all the tables to do that.

Benefits of well designed database:

If the tables are designed in a way that can be connected it will reduce the errors in the data, give easy search for students and their enrollment, and can let us delete any information needed without affecting other sources.

In Access 2007 I will build each table with an ID

I will make for each student an ID (like 1, 2, 3…) The student ID will be the primary Key The Course code will be the foreign key

Query

Its intended to show all the student contact details in a time Total courses greater than 25 (degree courses)