public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        //kiteworks starts with version 6
        switch (oldVersion) {
            case 6:
            case 7:
                db.execSQL(String.format("ALTER TABLE %s ADD COLUMN %s TEXT DEFAULT ''", tableName, COLUMN_FILETYPE));
            case 8:
                db.execSQL(String.format("ALTER TABLE %s ADD COLUMN %s INTEGER DEFAULT 0", tableName, COLUMN_QUARANTINE));
            case 9:
                db.execSQL(String.format("ALTER TABLE %s ADD COLUMN %s INTEGER DEFAULT 0", tableName, COLUMN_SECURE));
            case 12:
                db.execSQL(String.format("ALTER TABLE %s ADD COLUMN %s INTEGER DEFAULT 0", tableName, COLUMN_DLP_LOCK));
        }
    }