最近發貼時，網友回貼時提到了一個詞CRUD,之前不知道。Baidu了一下找到答案。
CRUD是指在做計算處理時的增加(Create)、查詢(Retrieve)（重新得到數據）、更新(Update)和刪除(Delete)幾個單詞的首字母簡寫。主要被用在描述軟件系統中數據庫或者持久層的基本操作功能。
In computing, CRUD is an acronym for create, retrieve, update, and delete. It is used to refer to the basic functions of a database or persistence layer in a software system.
C reate new records
R etrieve existing records
U pdate existing records
D elete existing records.