Analysis Report Dazzling Costumes Information System

Question: Describe the Dazzling Costumes Information System? Answer: Introduction The report is describing the Dazzling Costumes Information System. Dazzling Costumes Information System works on hiring of clothing items to their customers. The report is describing the complete management system of Dazzling Costumes by using UML, ER Diagrams, Data Flow Diagrams and 3NF notations. Context Diagram The Context diagram shows the dataflow of the complete system graphically. It is the starting phase of any project. The analysis and design of any new system starts with the implementation of Context diagram. Level 0 DFD The Level 0 DFD shows the dataflow of every process graphically. It is very important phase of any project. The complete system can be easily understood by the Level 0 DFD diagram. (Modern Analyst Media LLC 2014) ER Diagram 3NF Design Customer (CustomerID, firstName, lastName, date_of_birth, gender, address, email) CustomerID - Primary Key (PK) Designation (DesignationID, Description) DesignationID - Primary Key (PK) Employee (EmployeeID, Name, Address, Phone, DesignationID, Email) EmployeeID - Primary Key (PK) Employee(DesignationID) references Designation(DesignationID) Item (ItemCode, Name, Brand, Description, Status) ItemCode - Primary Key (PK) ItemPiece (ItemCode, ItemPieceCode, Name, dateofpurchase, costofpurchase, Size, Colour, Description, Status) ItemCode, ItemPieceCode - Primary Key (PK) ItemPiece(ItemCode) references Item(ItemCode) HireItem (CustomerID, ItemCode, ItemPieceCode, hiredDate, dueDate, returnedDate, EmployeeID) CustomerID ,ItemCode, ItemPieceCode - Primary Key (PK) HireItem(ItemCode) references Item(ItemCode) HireItem(ItemPieceCode) references ItemPiece(ItemPieceCode) HireItem(CustomerID) references Customer(CustomerID) (Peter Brombarg n.d) 3NF design and ER Diagram are showing all relations, their primary and foreign keys also. All entities of the system are in 3NF and the analysis and design of the Dazzling Costumes Information System is giving full detail regarding the Dazzling Costumes Information System. Class Diagram Class diagram is very important to implement the Dazzling Costumes Information System. It is the conceptual model which shows all entities and attributes of the entire system. It is describing all constrains in the system for all cases in spite of showing the solution of the problems which will occur in the Dazzling Costumes Information System. (Scott W. Ambler, 2014) (Microsoft 2015) Overview The report is showing all necessary diagrams to make Dazzling Costumes Information System. The basic unit Context diagram and DFD diagram are showing the system boundary. The class diagram is showing all entities which will be generated to make Dazzling Costumes Information System. 3NF design is showing all relations, their primary and foreign keys also. All entities of the system are in 3NF and the analysis and design of the Dazzling Costumes Information System is giving full detail regarding the Dazzling Costumes Information System. All entities of the system are satisfying the 3NF form because every entity is related to each other and none column contains duplicate data in any relation. All columns in each table depend only upon the primary key. In this way the complete Dazzling Costumes Information System is being described by the report. System Changeover Methods System changeover method is the process which is used to change the previous system by new system. These are some System Changeover methods e.g. Direct Cutover Changeover Method, Parallel Operation Changeover Method, Pilot Operation Changeover Method and Phased Operation Changeover Method. Direct Cutover In direct operation, old system immediately gets changed by the new system after implementation of the new system. It is the financially cheapest method among all the changeover methods, but it is very risky method. There are lot of chances to lose the important data. Parallel Operation In parallel operation, the old system does not get immediately changed by the new system. The old system runs in parallel to the new system and when the new system runs successfully and staff members get comfortable with the new system, then the old system get replaced by the new system. It is more expensive than direct cutover because two systems runs at a time but it is safer than direct cutover. Pilot Operation In pilot operation, the new system gets implemented on one location of the company and some staff members operation the new system. The team of staff members who operate the new system is called Pilot. When the pilot team pass the new system, then the new system gets implemented on all locations and old system gets replaced with the new system. Phased Operation Phased operation works in stages. The whole system does not implemented in the company for all staff members. The implementation of some phases of the new system is done only. The whole system gets installed only for few staff members. The phased operation is the combination of direct cutover and parallel operation. Now for Dazzling Costumes Information System, the pilot operation changeover method is best because there is less risk factor in pilot operation. It is secure for the Dazzling Costumes. Staff members will get enough time to learn the new system in pilot operation changeover method. (Hearst Newspapers LLC 2015) References [1] Modern Analyst Media LLC 2014, Intervies Questions for Business Analysts and System Analysts, Viewed on 22nd Jan 2015 https://www.modernanalyst.com/Careers/InterviewQuestions/tabid/128/ID/1433/What-is-a-Context-Diagram-and-what-are-the-benefits-of-creating-one.aspx [2] Scott W. Ambler 2014, UML2 Class Diagrams: An Agile Introduction, Viewed on 22nd Jan 2015 https://www.agilemodeling.com/artifacts/classDiagram.htm [3] Microsoft 2015, UML Class Diagrams: Reference, Viewed on 22nd Jan 2015 https://msdn.microsoft.com/en-us/library/dd409437.aspx [4] Peter Brombarg n.d., SQL SERVER Database Normalization Basics for Developers, Viewed on 22nd Jan 2015 https://www.nullskull.com/a/1629/sql-server-database-normalization-basics-for-developers.aspx [5] Hearst Newspapers LLC 2015, Changeover Techniques, Viewed on 22nd Jan 2015 https://smallbusiness.chron.com/changeover-techniques-34890.html