| ID | Feature | IndexedDB (Native) | SQLite (WASM/OPFS) | 
| --- | --- | --- | --- | 
| 1 | Type | NoSQL Document Store | Relational (RDBMS) | 
| 2 | Language | JavaScript (No SQL needed) | SQL | 
| 3 | Structure | Object-oriented (JSON) | Tables, rows, columns | 
| 4 | Complexity | Steep learning curve, event-based | Familiar SQL syntax | 
| 5 | Concurrency | Low (single-tab focus) | Good (via WAL mode in workers) | 
| 6 | Setup | Native, no external library | Requires loading WASM + VFS | 
| 7 | Portability | Hard to move outside browser | Very easy (portable file) |