Database Administrator: Create user accounts with appropriate access rights, Restore data after a system crash, Apply security patches and updates, Audit user activities in the database, Control concurrent access and locking, Manage user roles and privileges, Schedule database downtime, Encrypt sensitive data, Database Designer: Identify entities and relationships from requirements, Estimate storage requirements for the schema, Specify field-level constraints, Choose suitable data types for each field, Normalize data to eliminate redundancy, Document the schema and relationships, Define primary and foreign keys, Handle schema versioning, End Users: Change password, Log into the application, Download a receipt or file, Post a comment or review, Place an order or make a booking, Upload a document (e.g., resume, report), View transaction history, Add items to a cart or wishlist,

“Who Does What?"

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