A.DROP FROM ST WHERE 性別="男" B.DROP FROM ST FOR 性別="男" C.DELETE FROM ST WHERE 性別="男" D.REMOVE FROM ST WHERE 性別="男"
A.字段有效性規(guī)則 B.記錄有效性規(guī)則 C.輸入掩碼 D.默認(rèn)值
A.EOF函數(shù)的值為·F·，而BOF函數(shù)的值為·T B.EOF和BOF函數(shù)的值同時為·F· C.EOF和BOF函數(shù)的值同時為·T· D.EOF函數(shù)的值為·T·，而BOF函數(shù)的值為·F
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