Information Communication Technology ICT – 15 Proofing | e-Consult
15 Proofing (1 questions)
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A 'dropdown list' (also known as a select box) is a common data validation routine used in database applications. It presents the user with a pre-defined list of options to choose from. The application's code is configured to only accept values from this list.
How it works: The dropdown list is typically populated with values stored in the database. When the user selects an option, the application automatically inserts the corresponding value into the database field. Any attempt to enter a value not present in the dropdown list will be rejected.
Advantages:
- Consistency: Ensures that data is entered consistently across all users and entries.
- Reduces Errors: Minimises errors by limiting the possible values to a predefined set.
- Data Integrity: Helps maintain data integrity by preventing invalid or inconsistent data from being entered.
Disadvantages:
- Limited Options: Only allows for the options that are pre-defined in the dropdown list. Users cannot enter values that are not listed.
- Maintenance: Requires updating the dropdown list in the database whenever new options are needed.
- User Experience: Can be less flexible than free-text input, potentially frustrating users if the required option isn't available.