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The different aspects of the design of my website for Hatch end cars.

Extracts from this document...

Introduction

DESIGN (Bi) Design specification: The different aspects of the design stated below will be covered in the following pages to come: * Screen layouts * Processing * Queries * Error messages and dialog boxes * File and data structure SCREEN LAYOUTS The layouts of all the screens included in the system are illustrated below. Font size: The font size and text colour specified below will be the same for every screen to maintain consistency. Font size Font colour Font style Justification Headings 28pt Black, bold Times New Roman 28pt and bold- to capture users attention. Subheadings 18pt Black, bold Times New Roman 18pt and bold- big enough to be easily read by the user. Other text used 8pt Black, normal MS Sans Serif MS Sans Serif- to differentiate data held in the database from headings and subheadings used on the screens. Colour scheme for background: Different colour schemes will be given to each section as stated in the requirements specification to make each section easily recognisable. Section Background colour Main menu Tan Members Purple Data Items Light Yellow Reports menu Light Green Positioning of logo: I have made a logo to be positioned at the top right of every screen that will be displayed on the system. This logo was designed using Publisher. The logo design is shown below MAIN MENUE The screen above shows how the main menu will look like. Each button leads to different screens. The time display will display the current time at all times. The information below shows where each button leads to: Button: Rentals- Members details- Displays details of CARS hire by each customer. Displays details of all members Cars Displays details of all cars Reports menu- Help- Displays menu for all the reports. This is an online help that will open the User guide. CARS REPORTS MENU Print Archives: This prints off all old rentals that have already been returned, and will be deleted. ...read more.

Middle

Purpose: To close the start up screen after 2 seconds of display and open the MAIN MENU. ACTIONS ACTION ARGUMENTS Close Object type: Form, Object name: Start up screen, Save: Prompt Open form Form name: Main menu, View: Form, Window mode: Normal Maximize No action arguments Name: No Data Purpose: To display an error message if the search is not valid. ACTIONS ACTION ARGUMENTS MsgBox Message: There is no data matching your search criterion. @Please close the report and try a correct search criterion@. Beep: Yes, Type: Information, Title: HATCH END CARS (HEC) Name: No exit Purpose: To prevent the system from closing down. ACTIONS ACTION ARGUMENTS Close Object type: Form, Object name: Finish, Save: No Name: Yes Exit Purpose: To close down the whole system. ACTIONS ACTION ARGUMENTS Quit Options: Exit Name: Price update for CARS. Purpose: To automatically update the prices of CARS that is entered. ACTIONS ACTION ARGUMENTS Set warnings Warnings on: No Open query Query name: Price Update query for cars, View: Datasheet, Data mode: Edit MsgBox Message: Prices for cars have been successfully updated. Beep: Yes, Title: None Name: Rentals delete macro. Purpose: To delete rentals that has been returned and the overdue is paid. ACTIONS ACTIONS ARGUMENTS Set warning Warnings on: No Open query Query name: Old rentals append query, View: Datasheet, Data mode: Edit Open query Query name: Old rental delete query, View: Datasheet, Data mode: Edit Open query Query name: Over three months delete query, View: Datasheet, Data mode: Edit MsgBox Message: Rentals have been deleted successfully. Beep: Yes, Type: None, Title: Clearing Rentals ERROR MESSAGES AND DIALOG BOXES Since my client wanted help in some aspects of the system because this is their first time of using a computer based system. There will be error messages where it is necessary to enter data and where there is a validation in a field. Error messages will be displayed in these parts of the system: * When adding, deleting or editing a customers and cars. ...read more.

Conclusion

BENEFIT 4: User interface Since this is the first computer based system in HEC, some employees do not have the required experience. However, with the use of buttons to navigate the system, they can use the system more efficiently and confidently. In addition, including the HEC logo on all the screens, making the pages more colourful and the use of on screen error messages makes the user interface user friendly. (iii) LIMITATIONS OF THE END SYSTEM: LIMITATION 1: Power cut The end system will be electronically based and will therefore be running on electricity. So one of the drawbacks is that, in cases of power cuts the system will be out of use. The use of generators in the cases of power cuts should supply power to the system, allowing it to run as intended. However, Mr. Ghulraham needs to be aware of the cost implications of doing this. LIMITATIONS 2: Viruses The spread of viruses into the system for example through a memory stick will disable the whole functions that can be performed in the system. It will be essential to install or download a firewall to prevent unauthorized access into the system and back up regularly, preferably over night. LIMITATIONS 3: Training Without the required level of skills, using the system will be very difficult for employees to navigate their way through the system despite the good user interface. Using an appropriate training technique to educate employees on how to use the system will definitely enhance their skills, allowing them to use the system much quicker and confidently. In addition, because of the simplicity of Access, hence my reason for choosing it and the design of the system, will also aid employees to easily navigate their way through the system. ESTIMATION OF STORAGE SPACE REQUIRED OVER TIME An estimation of the total storage space needed has been shown below: Total Number of Bytes needed- 300080 bytes 10% of 300080= 30008 Estimation of storage space- 300080 + 30008= 330088 bytes ?? ?? ?? ?? Mohammad azem omerzada 13 red ...read more.

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