diff --git a/web/database/queries/db-queries.js b/web/database/queries/db-queries.js
new file mode 100644
--- /dev/null
+++ b/web/database/queries/db-queries.js
@@ -0,0 +1,17 @@
+// @flow
+
+function getSQLiteDBVersion(db: SqliteDatabase): number {
+  const versionData = db.exec('PRAGMA user_version;');
+  if (!versionData.length || !versionData[0].values.length) {
+    throw new Error('Error while retrieving database version: empty result');
+  }
+  const dbVersions: SqlValue = versionData[0].values[0][0];
+  if (typeof dbVersions !== 'number') {
+    throw new Error(
+      'Error while retrieving database version: invalid type returned',
+    );
+  }
+  return dbVersions;
+}
+
+export { getSQLiteDBVersion };
diff --git a/web/database/worker/db-worker.js b/web/database/worker/db-worker.js
--- a/web/database/worker/db-worker.js
+++ b/web/database/worker/db-worker.js
@@ -11,6 +11,7 @@
   workerResponseMessageTypes,
   type WorkerRequestProxyMessage,
 } from '../../types/worker-types.js';
+import { getSQLiteDBVersion } from '../queries/db-queries.js';
 import { SQLITE_CONTENT, SQLITE_ENCRYPTION_KEY } from '../utils/constants.js';
 import { generateDatabaseCryptoKey } from '../utils/worker-crypto-utils.js';
 
@@ -44,12 +45,8 @@
     sqliteDb = new SQL.Database();
   }
 
-  const versionData = sqliteDb.exec('PRAGMA user_version;');
-  if (versionData.length && versionData[0].values.length) {
-    console.info(`Db version: ${versionData[0].values[0]}`);
-  } else {
-    throw new Error('Error while retrieving database version');
-  }
+  const dbVersion = getSQLiteDBVersion(sqliteDb);
+  console.info(`Db version: ${dbVersion}`);
 }
 
 async function processAppRequest(