diff --git a/src/db/DittoDB.ts b/src/db/DittoDB.ts
new file mode 100644
index 0000000..e86b7e3
--- /dev/null
+++ b/src/db/DittoDB.ts
@@ -0,0 +1,17 @@
+import { Conf } from '@/config.ts';
+import { DittoSQLite } from '@/db/adapters/DittoSQLite.ts';
+import { DittoTables } from '@/db/DittoTables.ts';
+import { Kysely } from '@/deps.ts';
+
+export class DittoDB {
+  static getInstance(): Promise<Kysely<DittoTables>> {
+    const { databaseUrl } = Conf;
+
+    switch (databaseUrl.protocol) {
+      case 'sqlite:':
+        return DittoSQLite.getInstance();
+      default:
+        throw new Error('Unsupported database URL.');
+    }
+  }
+}
\ No newline at end of file