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Input & Output Design - Coggle Diagram
Input & Output Design
Input Design & Technology Issues
Quality of the output = Quality of the input
Garbage in, garbage out (GIGO)
Input & Data Entry Method
b.Online Input
a.Batch Input
Guidelines For Data Entry Screen Design
5)Do not require users to type leading zeroes for numeric fields
6)Do not require users to type trailing zeroes for numbers that include decimals
4)Require an ending keystroke for every field
7)Dislpay default values so operators can press the ENTER key to accept the suggested value
3)Display a sample format if a user must enter values in a field in a specific format - separator
8)Use a default value when a field value will be constant for successive records or throughout the data entry session
2)Provide a descriptive caption for every field and show the user where to enter the data and the required or maximum field size
9)Display a list of acceptable values for fields and provide meaningful error messages
10)Provide a way to leave the data entry screen at any time without entering the current record
11)Provide users with an opportunity to confirm the accuracy of input data before entering it
1)Restrict user access to screen locations where data is entered
12)Provide a means for users to move among fields on the form
13)Design the screen form layout to match the layout of the source document
14)Allow users to add, change, delete and view records
15)Provide a method to allow users to search for specific information
Objectives of Input Design
To ensure the quality, accuracy and timeliness of input data
Good input design requires attention to human factors as well as technology issues
Data Capture vs Data Entry
Data Capture
data is captured via tick or check boxes
Data Entry
manually entered text, copying
Input Mask & Validation Rules
8 types of data validation rules
5.Reasonableness check
6.Validity check
4.Range check
7.Combination check
3.Data type check4
8.Batch controls
2.Existence check
1.Sequence check
Output Technology
b.Printed reports
a.Internet based information delivery
Blogs
Instant messaging
Email
c.Specialized forms of output
Types of Reports
b.Exception reports
c.Summary reports
a.Detail reports
Design Report Principles
Field order
Grouping detail lines
Column spacing
Repeating fields
Column heading alignment
Consistent design
Page headers and footers
Report headers and footers
Input & Output Controls & Security
Output control & security
Input control & security