Dependencies:
1. Operating system (Windows, Mac OS, Linux)
2. Web browser (Chrome, Firefox, Safari)
3. Database management system (MySQL, Oracle, SQL Server)
4. Programming language (Java, Python, PHP)
Interfaces:
1. User interface: Allows users to interact with the system and perform tasks such as adding, editing, and deleting personal tasks.
2. Authentication interface: Verifies user identity and grants access to the system.
3. Notification interface: Sends reminders and alerts to users about upcoming tasks and deadlines.
4. Data storage interface: Stores and retrieves user data from the database.
5. Backup and recovery interface: Provides backup and recovery options in case of system failure or data loss.
6. Security interface (Protected): Ensures that user data is secure and protected from unauthorized access or theft. This includes encryption, access control, and other security measures.