23 Questions
What type of check ensures that a value has been provided for a required field?
Presence check
What type of check is used to validate the size or length of a data element?
Length check
What type of check verifies that a value falls within a specified range?
Range check
What type of check ensures that input data adheres to a specified format or pattern?
Format check
What would be an example of a presence check in an online form?
Making sure a name is not left blank
What is the main purpose of range checks?
To verify that a value falls within a specified range
What is the primary purpose of a check digit in an identification number?
To verify the accuracy of the entire number
What type of check ensures that a data element is of the expected data type?
Type check
What is the result when a check digit does not match the computed value?
An error in the number is indicated
What is an example of a fixed value check?
Selecting an option from a dropdown menu
What is the purpose of adding an extra digit to an identification number?
To validate the accuracy of the entire number
What is the result when a type check is performed on an input data?
The input data is compatible with the expected data type
Which type of check is most suitable to ensure a password meets a specific character requirement?
Length check
What is the primary function of a range check?
To verify if a value falls within a specified range
What type of check is used to validate the structure of a phone number?
Format check
Which type of check is used to verify that a mandatory field is not left empty?
Presence check
What is the main purpose of a length check?
To validate the size or length of a data element
What type of check is most suitable to validate the age of a person?
Range check
What is the primary function of a check digit in identification numbers?
To detect errors in the identification number
What is the outcome when a check digit does not match the computed value?
The number is invalid
What is the purpose of a type check?
To ensure the data element is of the expected data type
What is an example of a fixed value check in a user interface?
Selecting an option from a dropdown menu
What is the purpose of adding a check digit to an identification number?
To validate the accuracy of the entire number
Study Notes
Data Validation Techniques
- Presence check ensures a required field or data element is not left blank or empty, e.g., mandatory fields in an online form like name or email address.
- Length check validates the size or length of a data element, e.g., enforcing a minimum and maximum character limit for a password.
Length Check Examples
- Minimum character limit for a password.
- Maximum character limit for a password.
Range Check
- Range check ensures a value falls within a specified range, e.g., validating a person's age to be within a realistic range of 0 to 120 years.
Format Check
- Format check validates the structure or pattern of a data element, e.g., verifying a phone number follows a specific pattern like (123) 456-7890 for a US phone number.
Check Digit
- Check digit is an error-detecting code used to validate identification numbers, such as credit card numbers or barcodes.
- Involves adding an extra digit to the number, computed using a specific algorithm.
- Check digit verifies the accuracy of the entire number, and if it doesn't match the computed value, it indicates an error in the number.
Type Check
- Type check ensures a data element is of the expected data type, e.g., verifying an input value is an integer if a program expects an integer.
- Validates whether the input data is compatible with the expected data type, such as a numeric value, string, date, or boolean.
Fixed Value Check
- Fixed value check validates that a data element matches a predetermined or expected value, e.g., ensuring a chosen value from a dropdown menu matches one of the available options.
Data Validation Techniques
- Presence check ensures a required field or data element is not left blank or empty, e.g., mandatory fields in an online form like name or email address.
- Length check validates the size or length of a data element, e.g., enforcing a minimum and maximum character limit for a password.
Length Check Examples
- Minimum character limit for a password.
- Maximum character limit for a password.
Range Check
- Range check ensures a value falls within a specified range, e.g., validating a person's age to be within a realistic range of 0 to 120 years.
Format Check
- Format check validates the structure or pattern of a data element, e.g., verifying a phone number follows a specific pattern like (123) 456-7890 for a US phone number.
Check Digit
- Check digit is an error-detecting code used to validate identification numbers, such as credit card numbers or barcodes.
- Involves adding an extra digit to the number, computed using a specific algorithm.
- Check digit verifies the accuracy of the entire number, and if it doesn't match the computed value, it indicates an error in the number.
Type Check
- Type check ensures a data element is of the expected data type, e.g., verifying an input value is an integer if a program expects an integer.
- Validates whether the input data is compatible with the expected data type, such as a numeric value, string, date, or boolean.
Fixed Value Check
- Fixed value check validates that a data element matches a predetermined or expected value, e.g., ensuring a chosen value from a dropdown menu matches one of the available options.
This quiz covers various data validation techniques including presence checks, length checks, and range checks. Learn about enforcing minimum and maximum character limits for password fields and more.
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