How many types of data integrity are there

Explanation

Data integrity refers to the accuracy, consistency, and trustworthiness of data in a database or storage system. There are four main types of data integrity that ensure this:1. Entity Integrity: Focuses on the uniqueness and validity of data within a table. It ensures that each row in a table can be uniquely identified using a primary key, and that there are no missing values (NULL) for critical data points.2. Referential Integrity: Governs the relationships between tables in a database. It ensures that foreign keys referencing another table's primary key always point to valid data. This prevents orphaned records and inconsistencies.3. Domain Integrity: Defines the permissible values for each data attribute in a table. It enforces rules and constraints to limit the data entered to a specific format or range. This helps maintain data quality and consistency.4. User-Defined Integrity: Allows users to create custom rules beyond the basic data types and constraints. This caters to specific business requirements and data validation needs