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Fancy Car Rental System by:Abubaker Aidaroos Aljailani – H00154983Ali Mohamed Hassan AL Zaabi – H00136700Saif Abdullah Ali AlSadi – H00296533
Outline Systems Request – Business Case and Summary of
Requirements
FDD - Functional Decomposition Diagram
Context Diagrams
DFD - Data Flow Diagrams
Process Description – Structured English/Decision Tree/Table
Recommended Solution
Menu and Forms
Reports
Fancy car rental system based on basic Microsoft office and email system which delays the development of the company's improvements
Business background
Business backgroundDubai - HQ
Sharjah
Abu Dhabi (New Branch)
40 Employee 40 Employee
20 Employee
System request
• Based on structured analysis of SDLC (system development life cycle)• Follows the waterfall method• Reason for the system request is to convert the paper based
system into a online digital catalog system• Will allow the manager to monitor the market demand by
different system generated reports
System request•Benefits:• Increase productivity • Save processing time through the online system• Centralized database will synchronize the information
through the branches• Accurate information generation for better decision making
System requirement • System request is a feature that should be included in
the information system to meet the business requirements• Five board categories of system requirement :• Input• Output • Process • Performance • control
Functional decomposition diagram (FDD)
• A top down representation of a business process • Drawn like an organization chart• Business functional broken down to lower level
processes (process & sub process)
Functional decomposition diagram (FDD)
Context diagram
• Entities are related directly to the processes and sub process from the FDD diagram • May be internal or external entities
Context diagram
Data flow diagram (diagram zero)
•Exploded view of process zero contains:• One data storage• Four processes• Four entities• Arrows for data flow from and to the entities and
processes
Data flow diagram (diagram zero)
Process description tools
• Consist of three main methods (structure English, decision tree and table)• Is the detail of the functional primitive
Structure English• IF customer is above 18, and • IF customer has existing profile more than 1 year and rent
car more than 1 month • Classify as VIP customer and give 10% discount
• ELSE • Classify as normal customer and give 5% discount
• ELSE• Reject rental request
Decision trees
•A graphical representation of the conditions, actions and rules found in a decision table
Decision trees
Decision table
• Shows the logical structure with all possible combinations of conditions and resulting•All the possible outcome will be displayed in this
table
Decision table
System solution System interface consists of (Menu, Forms and
Reports)MENU FORMS REPORTS
Menu Interface
• Completely new switchboard which will allow easy way to navigate through the system by different users
• Categorized as per the process required by the user
Forms
• Consist of two main forms:
Customer registration
Will add or update the customer details
Car registration Will add or update the
car details
Reports • The system will allow a complete flexible ways of
report generation according to the managers need• Detailed report• Exception report• Summary report
Thank you for listening
Any Question ?