Assignment1 Database Design Development(1622)

ASSIGNMENT 1 FRONT SHEET Qualification BTEC Level 5 HND Diploma in Computing Unit number and title Unit 04: Database Design & Development submission submission Student declaration I

Higher Nationals in Computing

DATABASE DESIGN AND

DEVELOPMENT

ASSIGNMENT

No.1

Learner’s name: VO NGUYEN DUY NAM

Assessor name: NGUYEN VAN SON

Class: GCS1001B

Learner’s ID: GCS200888

Subject’s ID: 1622

Assignment due:19/2/2022 Assignment submitted:

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ASSIGNMENT 1 FRONT SHEET

Qualification BTEC Level 5 HND Diploma in Computing

Unit number and

title

Unit 04: Database Design & Development

submission

submission

Student declaration

I certify that the assignment submission is entirely my own work and I fully understand the

consequences of plagiarism I understand that making a false declaration is a form of malpractice

Student’s signature Grading grid

 Summative Feedback:  Resubmission Feedback:\

Lecturer Signature:

ASSIGNMENT 1 BRIEF Qualification BTEC Level 5 HND Diploma in Computing

Unit number Unit 04: Database Design & Development

Assignment title

Academic Year

Unit Tutor

IV name and date

Submission Format:

Format: This assignment is an Individual assignment and specifically including 1 document:

You must use font Calibri size 12, set number of the pages and use multiple line spacing at 1.3 Margins must be: left: 1.25 cm; right: 1 cm; top: 1 cm and bottom: 1 cm The reference follows Harvard referencing system The recommended word limit is 2.000-2.500 words.

You will not be penalized for exceeding the total word limit The cover page of the report has to be the Assignment front sheet 1

Submission Students are compulsory to submit the assignment in due date and in a way requested by

the Tutors The form of submission will be a soft copy posted on

http://cms.greenwich.edu.vn/

Note: The Assignment must be your own work, and not copied by or from another student or from

books etc If you use ideas, quotes or data (such as diagrams) from books, journals or other sources, you must reference your sources, using the Harvard style Make sure that you know how to reference

properly, and that understand the guidelines on plagiarism If you do not, you definitely get fail

Unit Learning Outcomes:

LO1 Use an appropriate design tool to design a relational database system for a substantial problem LO2 Develop a fully functional relational database system, based on an existing system design

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LO3 Test the system against user and system requirements

LO4 Produce technical and user documentation

Assignment Brief and Guidance:

You are employed as a Database Developer for a large IT consultancy company The company has been approached by FPT university which is expanding due to the growth of the number of students FPT is currently facing difficulties in dealing with managing the university It decided to develop several

academic systems to manage the university easier including: Online Library system, Student Grading

System, Attendance System, CMS System, Scheduling System, Enrolment Systems, and so on

You are tasked to select one of those systems to develop database for FPT university Your tasks are to: Work with FPT to find out about current requirements for each system

Analyze the requirements and produce clear statements of user and system requirements

Design a relational database system using appropriate design tools and techniques Develop

a fully functional relational database system, based on an existing system design

Test the system against user and system requirements

Produce technical and user documentation

Part 1 (Assignment 1)

Before you start the development process, your manager has asked you to produce a report for the CEO

of FPT, containing:

1. Clear statements of user and system requirements The system must have at least 2 user roles, including business processes and statistical reports for FPT university managers

2. The design of the relational database system using appropriate design tools and techniques It should contain at least four interrelated tables

You would prefer to produce a more detailed document, so you will produce a comprehensive design for a fully functional system which will include interface and output designs, data validations and cover data normalization

Your manager would like on the report your assessment of the effectiveness of the design in relation to user and system requirements

Part 2 (Assignment 2)

Once the designs have been accepted by your manager you have been asked to:

1.3 Develop the database system using evidence of user interface, output and data

validations and querying across multiple tables

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You want to include more than just the basics so you will implement a fully functional database system which will include system security and database maintenance features

2 You have decided to implement a query language into the relational database system The developed system will be demonstrated to your manager in the report including:

• Assessing whether meaningful data has been extracted through the use of query tools to produce appropriate management information

• Evaluating the effectiveness of the database solution in relation to user and system requirements, and suggest improvements

3 Once the system has been developed, you will test the system and your manager will complete a witness statement indicating how your tests are performing against user and system requirements

Besides, you will produce a brief report assessing the effectiveness of the testing, including an explanation

of the choice of test data used

4 Lastly you will produce technical and user documentation which will be given to the company You want to provide some graphical representations for ease of reference in the technical guide, so you have decided to produce a technical and user documentation for a fully functional system, including diagrams showing movement of data through the system, and flowcharts describing how the system works

Learning Outcomes and Assessment Criteria

LO1 Use an appropriate design tool to design a relational database system for a substantial problem

P1 Design a relational database

system using appropriate design

tools and techniques, containing at

least four interrelated tables, with

clear statements of user and system

requirements

M1 Produce a comprehensive design

for a fully functional system which includes interface and output designs, data validations and data

normalisation

D1 Assess the effectiveness of the design

in relation to user and system requirements

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ASSIGNMENT ANSWER

1 Scenario of the chosen system

After the cooperation of FPT university and NVIDIA Inc, it is essential for me to design database for FPT university’s education system FPT is concerned about the growth of the number of students in a few next semesters As I observe opinions and complaints from most students from FPT university, most of them mention about the traditional library Due to the increase in students, The traditional

system can’t meet student needs Here are some reasons about it:

+ Because of the pandemic, many students aren’t be able to borrow books or get its information on the spot

+ With more and more students borrow books which lead to information overload

to the library, incorrect information like wrong borrow date, extraordinary

expenses, … Usually appear

+ Traditional library with outdated methods

So I decide to develop an efficient fully functional database system for FPT

university which I call

Online Library system with specific IDs and many features Online Library

system will replace the traditional library in the upcoming future

I will explain this system thoroughly in the remain pages

2 SRS (System Requirement Specification)

3 Logical design (ERD)

4 Explanation

Explain briefly about ERD (entities, their relationship) Give reasons why ERD is suitable for the system

5 Physical design

II DATA VALIDATION AND NORMALIZATION (M1)

1 User Interfaces of your system

2 Data Validation (included in physical design)

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3 Normalization:

Explain why each of the table is 3 rd Normal Form, if not, explain why

III DESIGN EVALUATION (D1)

-Explain in details and with critical review, how your ERD design (entities,

relationships) can meets the user and system requirements

Scenario

After the cooperation of FPT university and NVIDIA Inc, it is essential for me to design database for FPT university’s education system FPT is concerned about the growth of the number of students in a few next semesters As I observe

opinions and complaints from most students from FPT university, most of them mention about the traditional library Due to the increase in students, The

traditional system can’t meet student needs Here are some reasons about it: + Because of the pandemic, many students aren’t be able to borrow books or get its information on the spot

+ With more and more students borrow books which lead to information overload

to the library, incorrect information like wrong borrow date, extraordinary

expenses, … Usually appear

+ Traditional library with outdated methods

So I decide to develop an efficient fully functional database system for FPT

university which I call Online Library system with specific IDs and many

features Online Library system will replace the traditional library in the

upcoming future

I will explain this system thoroughly in the remain pages

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TABLE OF CONTENTS

I DATABASE DESIGN

1 SRS (System Requirement

Specification) 11-12

2 Logical design

(ERD) 13-15

2.1 What is logical design

(ERD) 13

2.2

Entities 13

2.3 Types of

entities 13-15

3

Attribute 15

3.1Type of

attributes 15

4 Entity

relationship 15

5 Types of

relationships 15-16

6 Online library system logical design

(ERD) 17

7 Why erd suitable for this

system 17-18

8 Physical

Design 18

REFERENCES………

………19

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ASSIGNMENT 1

I DATABASE DESIGN

1 SRS (System Requirement Specification)

- A System Requirements Specification (SRS) (also known as a Software

Requirements Specification) is a document or set of documentation that

describes the features and behavior of a system or software application

Figure 1 Online library system (KUMAR, 2019)

- The Online Library System is intended to automate the library activities such

as creating a new borrower, giving books to the borrowers, maintaining the details of all the item that were available in the books This also helps the librarians by providing information such as borrow date, book titles, …

- System requirements:

+ Students are allowed to log in to the online library system with student ID

+ Database of student information storage systems such as student names, student phone numbers, gmail students

+ The system helps manuals to create, update and exploit information easier Data will be updated regularly and will not be copied Using databases to help store them and easily manage them

+ The system allows students to check the information of the book they borrowed, the loan date, return date and buy rental books

+ The system needs to ensure that no two students have the same ID and librarian and books

+ After the student logs in and searches for boolid, baborid, libraryid The system will be able to display all the information at the same time

+ The system can demonstrate all tables at the same time

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+ Detecting system when students enter wrong

data types - Usecase Diagram:

Figure 2 Usecase Diagram

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2.Logical design (ERD)

2.1 What is logical design (ERD)

Figure 3 Example of logical design

- Logical design is the second stage in the database design process The logical design goal is to design an

enterprise-wide database based on

a specific data model but independent of physical-level details Logical design requires that all objects in the conceptual model

be mapped to the specific constructs used by the selected database model

2.2 Entities

- An entity is an object that exists It doesn’t

have to do anything; it just has to exist In

database administration, an entity can be a

single thing, person, place, or object Data

can be stored about such entities A design

tool that allows database administrators to

view the relationships between several

entities is called the entity

relationship diagram (ERD)

Figure

4.Entities example

- In the Figure 3, we can see that Employee, Health Plan enrolment

are entities

2.3 Types of entities

- According to expertise knowledge, There are 4 types of

entities:

+ Domain entities

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- Entities represent domain objects and are primarily defined by their

identity, continuity, and persistence over time, and not only by the

attributes that comprise them An object primarily defined by its identity is called an Entity Entities are very important in the domain

model, since they are the base for a model

- Now look at the figure 2, There are some domain entities such as users, coach, habits,…

+ Linking entities

Figure 5 Linking entities example

- Linking entities sometime use to solve m-n relationship in database

- As you can see from figure 4, Linking entity is Primary Key Which

involve to 2 other Primary Keys : Student ID and Subject ID

+ Lookup entities

- Lookup entities are essentially utility entities

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Figure 6.Lookup entity example

- In this case, CarMake and CarModel describe a single entity set each Their functional dependencies are CarMakeId -> CarMakeName and CarModelId -> CarModelName

+ Weak entities

- In a relational database, a weak entity is an entity that cannot be

uniquely identified by its attributes alone; therefore, it must use a foreign key in conjunction with its attributes to create a primary key It dependent on other entities for its meaning

- Grade is a weak entity in figure 4 because Student ID and Subject ID

define its meaning

3 Attribute

Figure 7.Table Habits

- In relational databases, attributes are the describing

characteristics or properties that define all items

pertaining to a certain category applied to all cells of

a column The rows, instead, are called tuples, and

represent data sets applied to a single entity to

uniquely identify each item Attributes are, therefore,

the characteristics of every individual tuple that help

describe its unique properties

- Attribute in table Comments (Figure 6) is HabitName

attributes For example, the Address attribute of an Employee entity could consist of the Street, City, Postal code and Country attributes

be provided For example, an Employee entity may have more than one Email

ID attributes in the same cell

uniquely identifies that item For example, it can be the number of a certain invoice (e.g the individual ID of that invoice) A table that contains a single key attribute is considered a strong entity However, a table might contain more than one key attribute if it’s derived from other tables

attributes, either directly or through specific formula results For example, the Age attribute of an

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