ملكية البيانات

في هذا الدرس

give each service exclusive ownership of its data.

الموضوعات المخطط لها

• Each service owns its tables or database; no other service reads or writes them.
• Others get data only through the owner's API or events.
• Shared databases create hidden coupling: a schema change breaks other teams.
• One owner per fact: for example stock levels belong to Inventory, prices to Catalog.
• Separate databases can start as separate schemas; enforce with separate credentials.