We have obtained your name and address () the Commercial Counsellor’s Office ofthe Embassy of the People’s Republic of China
A、through
B、by
C、for
D、throughout
第1题:
You need to produce a report for mailing labels for all customers. The mailing label must have only the customer name and address. The CUSTOMERS table has these columns:CUST_ID NUMBER(4) NOT NULLCUST_NAME VARCHAR2(100) NOT NULLCUST_ADDRESS VARCHAR2(150)CUST_PHONE VARCHAR2(20)Which SELECT statement accomplishes this task?()
A. SELECT* FROM customers;
B. SELECT name, address FROM customers;
C. SELECT id, name, address, phone FROM customers;
D. SELECT cust_name, cust_address FROM customers;
E. SELECT cust_id, cust_name, cust_address, cust_phone FROM customers;
第2题:
部门DEPT(Deptno,Name,Tel,Leader)和职工EMP(Empno,Name,Sex,Address, Deptno)实体集,若一个职工只能属于一个部门,部门负责人Leader是一个职工。关系 DEPT和EMP的外码分别为(30);下图中a、b处的实体名分别为(31)。

A.Deptno、Empno
B.Name、Deptno
C.Leader、Deptno
D.Name、Address
第3题:
2.已知lis_2=[‘Name’,’Sex’],则lis_2*2=____, ’Address’ in lis_2 =______,len(lis_2)=______。
第4题:
● 部门DEPT(Deptno, Name, Tel, Leader) 和职工EMP(Empno, Name, Sex, Address, Deptno) 实体集,若一个职工只能属于一个部门,部门负责人 Leader 是一个职工。关系DEPT和EMP的外码分别为 (30) ;下图中a、b处的实体名分别为 (31) 。

(30)
A. Deptno、Empno
B. Name、 Deptno
C. Leader、Deptno
D. Name、 Address
(31)
A. DEPT、Empno
B. DEPT、EMP
C. EMP、Deptno
D. EMP、DEPT
第5题:
下列标识符中,不合法的用户标识符为()
A.month
B._5xy
C.int
D.your_name
第6题:
1、下列标识符中,不合法的用户标识符为()
A.month
B._5xy
C.int
D.your_name