User data protection

[azharxkhan]

// Connection Management: Ensure proper closing of database connections to prevent resource leaks and consider using a connection pool for better concurrency handling. // Security: Implement password hashing to protect user credentials and ensure input validation to prevent SQL injection. // Error Handling: Improve error propagation and handling to provide clearer feedback on failures, rather than just printing stack traces. // Data Consistency: Use transactions for operations involving multiple modifications to maintain data integrity, and validate input data for fields like email and role. // Code Organization: Consider breaking down the DAO into smaller classes or interfaces for better modularity and maintain //These issues need to be fixed later on to ensure user protection and privacy

[azharxkhan]

First all passwords need to be encryption and this can be done by many ways, this ensures that passwords are always safe guarded.

[azharxkhan]

once this issue is complete doc strings will be added for this class.