What functionality does Spring Data provide for working with databases?

Spring Data provides a convenient abstraction layer for working with databases, allowing developers to focus on business logic rather than low-level data access code.

Main features of Spring Data:

• Automatic generation of repository implementations based on interfaces.
• Support for various databases: relational (via Spring Data JPA), NoSQL (MongoDB, Cassandra, etc.).
• Simplified execution of CRUD operations without writing SQL.
• Support for creating queries by method names (Query Methods).
• Ability to use annotations to write custom queries.
• Support for pagination and sorting.

Example of a repository interface for the User entity:

public interface UserRepository extends JpaRepository<User, Long> {
    List<User> findByLastName(String lastName);
}

Spring Data automatically implements this interface, providing methods for finding users by last name and other standard operations.