As1-1622.Pdf

Higher Nationals in Computing Database Design and Development ASSIGNMENT No.1 Learner’s name: PHAM NGUYEN QUYNH NHU Assessor name: NGUYEN VAN SON Class: .GCS1005A Learner’s ID: .GCS210018 Subject’s ID: 1622 Assignment due: Assignment submitted: ASSIGNMENT FRONT SHEET Qualification BTEC Level HND Diploma in Computing Unit number and title Unit 04: Database Design & Development Submission date Date Received 1st submission Re-submission Date Date Received 2nd submission Student Name PHAM NGUYEN QUYNH NHU Student ID Class GCS1005A Assessor name GCS210018 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 P1 M1 D1 ❒ Summative Feedback: Grade: Lecturer Signature: Assessor Signature: ❒ Resubmission Feedback:\ Date: 1|Page Assignment Brief (RQF) Higher National Certificate/Diploma in Computing Student Name/ID Number: PHAM NGUYEN QUYNH NHU (GCS210018) Unit Number and Title: Unit 04: Database Design & Development Academic Year: 2022 Unit Assessor: Nguyen Van Son Assignment Title: Database design Issue Date: 12/10/2022 Submission Date: Internal Verifier Name: Date: Submission Format: Format: ● The submission is in the form of an individual written report This should be written in a concise, formal business style using single spacing and font size 12 You are required to make use of headings, paragraphs and subsections as appropriate, and all work must be supported with research and referenced using the Harvard referencing system Please also provide a bibliography using the Harvard referencing system Submission ● Students are compulsory to submit the assignment in due date and in a way requested by the Tutor ● The form of submission will be a soft copy posted on http://cms.greenwich.edu.vn/ ● Remember to convert the word file into PDF file before the submission on CMS Note: ● ● ● The individual Assignment must be your own work, and not copied by or from another student 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 understand and follow the guidelines to avoid plagiarism Failure to comply this requirement will result in a failed assignment Unit Learning Outcomes: LO1 Use an appropriate design tool to design a relational database system for a substantial problem 2|Page Assignment Brief and Guidance: You are employed as a Database Developer for a large IT consultancy company The company has been approached by FPT Shop which is expanding due to the growth of the number of stores FPT Shop is currently facing difficulties in dealing with managing the database from all shops on over country It decided to develop a new database so that: users can register with their phone numbers as IDs and order or rate, comment for their bought devices, shop managers can take care for their stores and director board can view all data from all shops You are tasked to select one of those systems to develop database for FPT Shop Your tasks are to:  Work with FPT Shop to find out about current requirements for each system  Analyse 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 (Assignment 1) Before you start the development process, your manager has asked you to produce a report for the CEO of FPT, containing: Clear statements of user and system requirements The system must have at least user roles, including business processes and statistical reports for FPT Shop managers 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 Learning Outcomes and Assessment Criteria (Assignment 1): Learning Outcome Pass Merit Distinction LO1 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 Content 3|Page Assignment I - Statements of user and system requirements - Overview about the Problem Information technology has grown tremendously in recent years especially since both developedanddeveloping countries have begun the process of digitizing all industries and sectors FPTRetail, theleading information technology company in Vietnam, developed the most profitable retail chainin2012.With more than 5000 employees and more than 6,000 stores spread across 63 provinces in Vietnam Because it is difficult for the operator to manage all the data of all FPT transaction points Inaddition, theboard of directors is aware of the growing situation of databases and computer software, so theywant tobe able to create a database with all information about the stores nationwide own company tobeabletounderstand their business situation Due to understanding the above situation, I was hired bytheexecutiveboard to build a database for their company In the database, management wants to have customer information, employee information, product information, billed information and all customer reviewsabout the product Furthermore, store managers wish they could manage all their businesses withease Management can access all data and store managers can manage their own locations They alsorequireadatabase that provides security requirements and quick login for all workers - Requirements of the application We are required by the Board of Directors to build a database that will be used to process all datafromstores around the country and assist shop management in better managing employees, commodities, andcustomers Basic needs for the database include quick access, accurate information storage, andthegreatest security measures Staff information and customer information should be the database's twomostcrucial entries if the Board of Directors is to administer all the stores more effectively than I believetheycan Additionally, for the Board of Directors and the shop manager to be able to improve customer service, product information, invoice information that has been exported, and customer assessment information regarding the product are also crucial It is preferable to draw in more clients II – Design the relational database system - Analyze the requirements Sale management database has relations as following: Login (StaffID, Password, No) It contains account information of database + StaffID can help manager know which staff login to the system + Password can help manage the security of database information + No can help manager know how many people can enter the database Customer (CustomerID, CustomerName, CustomerPhone, CustomerAddress) It storestheinformation of customers + CustomerID can help managers find customer information easily + CustomerName can help managers know the customer name + CustomerPhone can help managers know the customer phone to contact easily + CustomerAddress can help managers know the address to be able to deliver if the customer needs Staff (StaffID, StaffName, StaffPhone, StaffEmail, StaffAddress, StaffFunction) It storestheinformation of staff 4|Page + SatffID can help managers find staffs information easily + StaffName can help managers know the staff name + StaffPhone can help managers know the staff phone to contact easily + SatffEmail can help managers know the staff email to contact easily + StaffFunction can help managers know the function of each person in the store for easymanagement Product (ProductID, ProductName, Price, Quantity) It stores the information of product + ProductID can help managers find products information easily + ProcuctName can help manages know the product name + Price can help managers know the product price + Quantity can help managers know the amount of inventory in the warehouse Bill (BillID, StaffID, CustomerID, Date) It stores the information of bill + BillID can help managers find bills information easily + StaffID can help managers know which staff have sold that product to the customer + CustomerID can help managers know which customer have bought that product + Date can help managers know the date the customer has bought Bill Detail(BillID, ProductID, Quantity) It stores the information of bill deatail + BillID can help the manager know the bill that customers have bought + ProductID can help managers can manage the number of products in the warehouse + Quantity can help managers know the number of customers bought Rate (CustomerID, ProductID, Evaluation) It stores the information of product evaluationofcustomers + CustomerID can help managers know which customers have evaluated + ProductID can help managers hnow which products are evaluated by customers + Evaluation can help managers know the customer's evaluation points about the product - Database design with explanations a Logical design 5|Page Figure 1: logical design b Physical design Table: Login Field Name Data Type Allow Nulls Description SatffID varchar(6) x Staff code, primary key, foreign key Password char(10) x Password of staff to login the database No int x The number of staff Table: Customer Field Name Data Types Allow Nulls x Description CustomerID varchar(6) Customer code, primary key CustomerName varchar(50) CustomerPhone varchar(10) x Phone number of customer CustomerAddress varchar(50) x Address information of customer Full name of customer Table: Staff Field Name Data Types Allow Nulls x Description StaffID varchar(6) StaffName varchar(50) Full name of staff StaffPhone varchar(10) Phone number of staff StaffEmail varchar(50) StaffAddress varchar(50) x Staff code, primary key Email address of staff Address information of staff 6|Page StaffFunction varchar(25) x Data Types Allow Nulls Function of staff in the store Table: Product Field Name x Description ProductID varchar(6) Product code, primarykey ProductName varchar(50) Price float x Price of product Quantity int x Quantity of product Name of product Table: Bill Field Name Data Types Allow Nulls Description BillID varchar(6) x Bill code, primary key StaffID varchar(6) x Staff code, foreign key CustomerID varchar(6) x Customer code, foreign key Date date Bill date Table: BillDetail Field Name Data Types Allow Nulls Description BillID varchar(6) x Bill code, primary key, foreign key ProductID varchar(6) x Product code, primary key, foreignkey Quantity int x Quantity of bills Table: Rate Field Name Data Types Allow Nulls Description CustomerID varchar(6) x Customer code, primarykey, foreign key ProductID varchar(6) x Product code, primarykey, foreign key Evaluation text x Evaluation of product - Review whether the database is normalized At the request of the Board of Directors, I provided a data sheet with four tables that includedcustomerinformation, staff information, export invoice information, product information, and customer evaluationinformation about that product As a result, I discovered a number of its flaws, such as the fact that thecustomer information board, employees, and items can be repeated when there is too much informationloaded, making it impossible to update the database Furthermore, data access is complicated As a result, I discovered a solution by standardizing data, which allows us to reduce the chance of superfluousdata,maintain consistency, and enable staff to quickly update and access Data may be simply exported Normalization is a database design process that begins with an examination of the relationships between 9|Pagecharacteristics (also known as functional dependencies) A variety of tests are run during normalizationtodetermine the optimum grouping for these attributes and, as a consequence, a suitable set of relationstomeet the user's data demands We can standardize data in three ways: the first normal form(1NF), thesecond normal form (2NF), and the third normal form (3NF) There are no repeated groups inthefirstnormal form since only single values are permitted at the intersection of each rowand column Removethe repeating group and construct two new relations to normalize a relation that has a repeatinggroup Forunique identification, the primary key of the new connection is a mix of the primary key of theoriginalrelation and an attribute from the newly generated relation The relation must 7|Page first be in 1NFtobeinthesecond normal form If and only if the primary key has a single attribute, the relation is automaticallyin2NF If the relation contains a composite primary key, each non-key characteristic must be entirelyrelianton the entire primary key rather than a portion of the primary key (i.e., there must be no partial dependency or augmentation) The connection must be in second normal formto be in thirdnormal form.Furthermore, any transitive dependencies must be eliminated; a non-key property cannot be functionallyreliant on another non-key attribute For example, not yet The First Normal Form (1NF) as follows: The information of customers has been corresponded with the customer's ID, customer name, customeremail, and customer address, as shown in the above table Examples of The First Normal (1NF) asfollows: For example, not yet The Second Normal Form (2NF) as follows: According to the above table, we can see that it has two main courses: StaffID and Function At therequest of the second normal form, the attributes must depend entirely on the main key as the employee'sname, the employee's email and the employee's address regardless of the main key attribute Thefollowing is the correct example of The second normal form (2NF): 8|Page For example, not yet The Third Normal Form (3NF) as follows: According to the table above, we can see the two names of the product and the price does not dependontwo main courses: the customer's ID and the product's ID But they depend on the North's bridgeproperties, if we look up the ID product we can know the name and price of the product The followingisthe correct example of The third normal form (3NF): - Data validation Before utilizing, importing, or otherwise processing data, it is necessary to validate it to ensureitscorrectness and quality Depending on the target restrictions or objectives, many methods of validationmight be conducted Validation is a type of data purification To reduce project flaws, data must bevalidated for quality, clarity, and specificity Without verifying data, you risk making judgments basedonfaulty data that is not precisely indicative of the scenario at hand While it is critical to evaluatedatainputs and values, it is also crucial to validate the data model itself If the data model is not properlydesigned or developed, you may encounter problems while attempting to use data files in variousprograms and software Table: Login Field Name StaffID Primary key (PK) or Foreign Key (FK) PK, FK1 Data Validation Like ‘[FS][0-9][0-9][0-9][0-9]…’ Password Like ‘[A-Z][a-z][0-9]…’ No Like ‘[A-Z][0-9][0-9][0-9][0-9]…’ Table: Customer 9|Page Field Name CustomerID Primary key (PK) or Foreign Key (FK) PK Data Validation Like ‘[A-Z][a-z][0-9][0-9]…’ CustomerName Like ‘[A-Z][a-z][a-z][a-z]…’ CustomerPhone Like ‘0[1-9][0-9][0-9][0-9]…’ CustomerAddress Like ‘[0-9][0-9][0-9][0-9][0-9][A-Za-za-zaza-z][A-Za-za-za-za-z][A-Za-za-za-za-z][AZa-za-za-za-za-z][0-9]’ Table: Staff Field Name StaffID Primary key (PK) or Foreign Key (FK) PK Data Validation Like ‘[FS][0-9][0-9][0-9][2-9][0-9][0-9][0-9]’ StaffName Like ‘[A-Z][a-z][a-z][a-z]…’ StaffPhone Like ‘0[1-9][0-9][0-9][0-9]…’ StaffEmail Like ‘%@%.fpt.vn’ Table: Product Field Name ProductID Primary key (PK) or Foreign Key (FK) PK Data Validation Like ‘[A-Z][A-Z][0-9][0-9]…’ ProductName Like ‘[A-Z][a-z][a-z][a-z]…’ Price >0 Quantity >0 Table: Bill Field Name Primary key (PK) or Foreign Key (FK) Data Validation BillID PK Like ‘[B][0-9][0-9]…’ StaffID FK Like ‘[FS][0-9][0-9][0-9][2-9][0-9][0-9][0-9]’ CustomerID Fk Like ‘[A-Z][a-z][0-9][0-9]…’ Date < = getdate() Table: BillDetail Field Name Primary key (PK) or Foreign Key (FK) Data Validation BillID PK, FK1 Like ‘[B][0-9][0-9]…’ ProductID PK, FK2 Like ‘[A-Z][A-Z][0-9][0-9]…’ Quantity >0 Table: Rate Field Name Primary key (PK) or Data Validation 10 | P a g e Foreign Key (FK) CustomerID PK, FK1 Like ‘[A-Z][a-z][0-9][0-9]…’ ProductID PK, FK2 Like ‘[A-Z][A-Z][0-9][0-9]…’ Evaluation Like (‘Very Poor’, ‘Poor’, ‘Average’,‘Good’, ‘Excellent) - Wireframe of the application The system will have six main functions, such as a login system that prevents outsiders fromtryingtologin to the system, the primary menu of the program so that users can choose the desired function, adding,removing, store information of the data that the user wants to edit or view the store's information, andthefunctions of adding, removing, hold data of the information the user wants to update or perspectivethestore's information Figure 2: Login interface 11 | P a g e Figure 3: Main interface Figure 4: Information of Staff 12 | P a g e Figure 5: Information of Customer Figure 6: Information of Product 13 | P a g e Figure 7: Information of Rate Figure 8: Information of Bill 14 | P a g e Figure 9: Information of Bill’s detail 15 | P a g e References Eng, N and Watt, A (2014) Chapter 12 Normalization, Database Design 2nd Edition BCcampus Available at: https://opentextbc.ca/dbdesign01/chapter/chapter-12-normalization/ (Accessed: October 14, 2022) Simplilearn (2022) What is normalization in SQL with examples? 1NF, 2NF, 3NF and BCNF, Simplilearn.com Simplilearn Available at: https://www.simplilearn.com/tutorials/sql-tutorial/whatis-normalization-in-sql (Accessed: October 14, 2022) What is data validation: Definition: Informatica India (no date) What is Data Validation: Definition | Informatica India Available at: https://www.informatica.com/in/services-and-training/glossary-ofterms/data-validation-definition.html (Accessed: October 14, 2022) FPT retail (2022) Wikipedia Wikimedia Foundation Available at: https://vi.wikipedia.org/wiki/FPT_Retail (Accessed: October 14, 2022) VỀ FPT (no date) Available at: https://fpt.com.vn/vi/ve-fpt (Accessed: October 14, 2022) 16 | P a g e