update method
Implementation
Future<void> update(String tableName, Map<String, dynamic> data,
String whereClause, List<dynamic> whereArgs) async {
await _database.update(tableName, data,
where: whereClause, whereArgs: whereArgs);
}
Future<void> update(String tableName, Map<String, dynamic> data,
String whereClause, List<dynamic> whereArgs) async {
await _database.update(tableName, data,
where: whereClause, whereArgs: whereArgs);
}