题目：
多选题
The core of SQL is formed by a command language that allows the ＿＿＿＿＿＿＿＿ and performing management and administrative functions.
- A. process of data
- B. retrieval of data
- C. updating of data
- D. ins＿ertion of data
- E. deletion of data
答案：
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