# Test data preparation tools ###### tags: `ISTQB` `SQA` `Test tools` Test data preparation tools are used by testers and developers to manipulate data so that the environment is in the appropriate state for the test to be run. ![](https://i.imgur.com/DBzvXAD.png) 例如，可以通過從實時系統中獲取所有記錄的5％並加擾個人詳細信息來創建一組測試數據，以便保護數據並確保不會將被測試的客戶信函錯誤地發送給真實客戶。