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Oracle数据库考虑下列声明,那些是不合法的:()

A.DECLAREv_name,v_deptVARCHAR2(14);
B.DECLAREv_testNUMBER(5);
C.DECLAREV_MAXSALARYNUMBER(7,2)=5000;
D.DECLAREV_JOINDATEBOOLEAN:=SYSDATE;

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