Validation

What is Validation?

Validation refers to the process of checking whether data or input content is correct and meets the required standards.

Simple Explanation

Validation involves verifying that the data or information entered is accurate. This generally includes:

1. Input Validation: Checking whether the data entered into a form or system is correct.
2. Format Validation: Ensuring that the data adheres to the required format or rules.

Detailed Explanation

1. Input Validation:
   • Example: When entering a phone number on an online form, validation checks if the format is correct (e.g., only numbers).
2. Format Validation:
   • Example: When a program reads a file, it checks if the file’s contents match the expected format (e.g., a phone number).

Validation helps prevent errors and ensures the accuracy of data by confirming that it meets specified rules and formats.

In Summary

When you encounter the term “validation,” think of it as “checking the correctness of data or input content,” often involving either “input validation” or “format validation.”