Note Table Design in MySQL for SmartNote

The note table is the center of SmartNote, so I designed it for both current features and next-step expansion.

Core fields#

• id: primary key
• user_id: owner reference
• title: note title
• content: body content
• is_deleted: soft-delete flag
• create_time, update_time: timestamps

Why soft delete#

Soft delete protects data recovery and auditability. It is useful when users delete by mistake or when features like restore/trash are added later.

Indexing direction#

At minimum:

• index on user_id
• index on (user_id, update_time) for personal lists

When search expands, move keyword handling to dedicated search strategy instead of overloading basic indexes.

API implications#

With this table, the service layer can support:

• create note
• update note
• list notes by user
• soft delete note
• later: favorites and recommendation signals

Closing#

Good schema design is not about complexity. It is about predictable evolution. A clear note table keeps the rest of the backend easier to implement and explain.