You are developing an application aimed at processing data files uploaded from thousands of suppliers. The primary objectives for this application are to ensure data security and manage aging data appropriately. The application design must meet the following criteria:

• Restrict access so that each supplier can only access their own data.
• Allow suppliers write access to their data only for a duration of 30 minutes.
• Automatically delete any data that is older than 45 days.

Given the constraints of a very short development cycle and the requirement for minimal maintenance, which two strategies would be most suitable? (Choose two.)