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System Analysis and Design Page 1

1.0System DescriptionGrading System is a LAN- based application this system is built using Visual Basic 0.6.

The main theme of the proposed system is to show how the system can help a school grades

in taking control of their keeping of their school grades records. The system can be say that

was a demo version of the real and complete version of the system proposed, because the

system is under its limitation until it is not register in pro version.

To create a registered in the school of grades. To restrict the users that can access the

system control area for viewing or modifying of grades records in the system database.

The main goal of the system is to improve the efficiency of the Grading System. This

system aims to solve the problems that are arising in the school management.

1.1 System Features

The Grading System has several features in order for the school to be productive

transaction.

Securitya. The user will be able to change his current password.b. Different users have limitations with regards of the system.

Administrator/Registrar - has full access of the functionality of thesystem.

Queriesa. Immediate search for the students requirementsb.Immediate search for the student grades.c. Immediate calculate grades of the students.

Reportsa. Generates of the student filesb.Generates of the list of students years and sections

Other Featuresa. Additional features is grading system


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2.0ScopeThe scope of the system we propose is to change the design and to add a feature to help

to the school that we chose.

2.1Use Case Diagram

Admin

Registrar

Teacher

Figure 2.1.1 and Figure 2.1.2

In Figure 2.1.1 and Figure 2.1.2 shows how to log in the admin, registrar and teacher.

There limitations to access the system. The use case diagram, to guide the admin, registrar

and teacher to use the system.

ADD student

EDIT student

UPDATE student

REMARKS

STORE Grades

LOG- IN

LOG-OUT


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Add the

Student

2.2 Interaction Diagram

Computerized Grading System is the process if the Grading System uses to

compute grades.

Compute

Students

Students Info

Figure 2.2 Interaction Diagram

This figure shows how to intersect to the student, admin.

Grading

S stem

Main Form

Log in


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Has

2.2Entity Relationship Diagram

Reports to

Receives

This figure shows the ER- diagram of the system, as whole system of the system.

3.0New Business RulesAssuming that the system is being implemented on to the school of MCA of Novaliches,

there are a new business rules that imposed.

The users of the system will be limited into two users such administrator and registrarfor security of the school.

The registrar imposed a deadline and schedule of the enrollment and also submissionof the requirements.

FACULTY

TEACHER

RESULT

STUDENT

DEPARTMENT

Has


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4.0System RequirementsThis chapter shows the requirements to need the system. The following requirements

help also to the users to operate.

4.1Hardware RequirementsThe Grading System consists of a database server and an application server. The

database server needs to handle a vast amount of data, so a large volume data storage and

good performance database management system is needed.

4.1.1 Server Requirements

Hardware Description

System Unit Dual core with speed of 2.2 GH or higher

Monitor Memory of 160 Gb

Keyboard/Mouse Compatible pointing devices

AVR Memory of 2Gb or higher

Printer Print speed: 36 ppm

Scanner 1600 dpi x 1600 dpi

Table 4.1 - Server Requirements

This table 4.1 shows the hardware requirements for the system to operates all the

times and the figure above give the description of the hardware. Scanner and Printer is the

devices to help the school to make fast and easy print out.

4.2Software RequirementsThe software requirements that we used are windows XP and we need a MySQL.

This figure illustrates the following requirements.


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4.2.1 Workstation Requirements

Software DESCRIPTION USES

Operating System Windows XP Professional For the environment to be use

Database My SQL server For the storage of the records

Programming Language Microsoft Visual Basic 6.0 For the development of the

system

Table 4.2.1 - Workstation Requirements

Table 4.2.1 shows the software for the workstation. It indicates here the type of software and

there description also the uses.

4.2.2 Applications Requirements

Software DESCRIPTION USES

Database My SQL server For the storage of the records

Programming Language Microsoft Visual Basic 6.0 For the development of the

system

Table 4.2.2 - Applications Requirements

Table 4.2.2 shows the software requirements for the application. It indicates here

the type of browsers that must be use, the web server and plu-ins used offices applications.

4.3Data RequirementsThe following data are to be feed to the system. These data are needed process and

produce reports.

From the student

Field Type

Stud_id Int(10)

Stud_lname Varchar(25)


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From the admin / registrar

5.0 Security Structure

Security is one of the main aspects of processing of data. Having high risks of

unsecured data may lead a lot of serious problems. Designing and planning security module

can give a great advanced on systems specially in handling data and situations which

concerns both the administrator and the end-user. The security structure show by hierarchy

format.

Stud_fname Varchar(25)

Stud_mname Varchar(25)

Stud_bdate date

Stud_contact# Int(10)

Stud_section Varchar(25)

Stud_add Varchar(30)

Field Type

Stud_level Int(10)

Stud_curriculum Varchar(25)

Stud_professor Varchar(25)


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Second Level Security

Registrar

First Level Security

Admin

Third Level Security

Teacher

Figure 5.0Security

In this design there is a logon page where the 3 users will enter the username and

password. It will be checked if it is present in the database. If not, the system will prevent the

current user from entering the system. But if the user is present in the database, he will be

allowed to enter and also his level of being a user will be checked. Some areas of the system

cannot be and must not be accessed by any ordinary-end-user. Because of different levels of

the security, different options and settings can be given to different types of user.


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5.1 Security Module Design

Log in into system

Please enter your username and password

Entering username and password

Check access

Status = OK

Status = Administrator

Grant all access

Else

Limited access

Accept user

Record login and transaction history

Else

Access denied

Figure 5.3Security Module Design

Figure 5.3 shows the security module design of the proposed system. The user will

log in into the system, asking the user to enter the username and password. If the system

verifies the username and password that is being inputted by the user, the user can now

access system. The user functionality depends on the user accessibility that they were used

into.

USER SYSTEM


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6.0 Archiving Structure

I want to backup files

Back up files

Complete

Status archive

I want to receive old files

I want to receive old files

Here are the files Files

Figure 6.0 - Archiving Structure

Figure 6.0 shows the backup and archiving design interaction diagram. The user will

back up the files to a device. Whenever the user wants to archive all the data in the database

to prevent the permanent deletion of the data, he must store it on a backup device

7.0 Backup and Recovery Procedures

Did you know that natural disasters, such as hurricane or flood only account for

approximately 2% of all business disasters while hardware failures and human error account

for more than 70%? Lets face it, as an IT professional, anything that interrupts normal

business operations could form the basis of disaster for you. Just remember, whatever the

User

Grading

System

Back up

Device


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cause of your interruption, how you prepare to respond that will decide the fate of your

business - So, are you prepared? As we process more and more data, there is also a need of

storing each piece of information, no matter how old it is. Database has limitations and

backing up data is one way of securing new permanent container of data. It is also a way of

having a copy of important files away from the original creator processor of the data. Most

data are stored to devices that are outside the server to prevent damage to data if a server

crashed happens.

7.1 Back Up and Recovery Diagram

Figure 7.1Back Up and Recovery Diagram

Figure 7.1 Shows backup and recovery diagram. It shows how to backup a data and archive it

whenever the database crashes or deleted. The data are being stored to devices that are

outside the server to prevent damage to data.

Revised l Mr

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