Data Validation

Question 1

Data Validation

Answer 1

Check accuracy and quality of source data before using,importing, or processing data.

Question 2

Types of data validation

Answer 2

Format Validation:
Checks data against a specific format.

Presence Validation: Requires mandatory fields to be filled, preventing empty entries.

Range Validation:
Ensures data falls within acceptable ranges. This is useful for numeric values like ages or quantities.

Uniqueness Validation: Ensures data uniqueness, such as using distinct email addresses for user accounts.