What are some examples of data validation?

What are some examples of data validation?

Data validation ensures that the data entered is accurate and useful. Examples include checking for valid email formats, ensuring age is a positive number, and verifying that required fields are not left empty.

Can you give me a specific example of validating an email address?

Sure! A common method is to use a regular expression to check if the email follows the format '[email protected]'. If it doesn't match this pattern, it's considered invalid.

What about validating a date? How is that done?

Validating a date can involve checking if the date is in the correct format (like YYYY-MM-DD) and ensuring that the date actually exists, such as not allowing February 30th.

Are there tools that can help with data validation?

Yes, there are many tools available, such as data validation libraries in programming languages like Python, JavaScript, and even built-in features in spreadsheet software.