What are the main difficulties that can be encountered when working with databases?

Main challenges when working with databases:

• Performance: Slow queries, lack of indexes, table locks can slow down operations.

• Concurrent access: Conflicts during simultaneous data modifications, issues with transactions and isolation.

• Migrations and schema changes: Updating the database structure without data loss and with minimal downtime.

• Security: Protecting data from unauthorized access, setting permissions.

• Backup and recovery: Ensuring data safety in case of failures.

• Scalability: Growth in data volume and load requires proper architecture choice and optimization.

• Data quality: Maintaining data integrity and correctness.

Understanding these aspects helps to work effectively with databases and avoid typical problems.