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The number of Congressmen from each state varies depending on （）
- A、the size of the area
- B、the size of the population
- C、the tradition
- D、the wealth
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更多 “The number of Congressmen from each state varies depending on （）A、the size of the areaB、the size of the populationC、the traditionD、the wealth” 相关考题
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The number of students in our school is __________.
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Examine the structure of the EMP_DEPT_VU view:Column Name Type RemarksEMPLOYEE_ID NUMBER From the EMPLOYEES tableEMP_NAME VARCHAR2(30) From the EMPLOYEES table JOB_ID VARCHAR2(20) From the EMPLOYEES tableSALARY NUMBER From the EMPLOYEES tableDEPARTMENT_ID NUMBER From the DEPARTMENTS table DEPT_NAME VARCHAR2(30) From the DEPARTMENTS table Which SQL statement produces an error?（）A. SELECT * FROM emp_dept_vu;B. SELECT department_id, SUM(salary) FROM emp_dept_vu GROUP BY department _ id;C. SELECT department_id, job_id, AVG(salary) FROM emp_dept_vu GROUP BY department _ id, job_id;D. SELECT job_id, SUM(salary) FROM emp_dept_vu WHERE department_id IN (10,20) GROUP BY job_id HAVING SUM (salary) 20000E. None of the statements produce an error; all are valid.
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Above is the output from show ip bgp neighbors command. What is line 21 stating about the BGP connection?()
A. the number of consecutive TCP connections to the specified remote neig hborB. the number of total TCP connections that the router hasC. the number of times the router has established a TCP connectionD. the number of neighbors that the router has
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The report from the US Department of Education shows that ______.A. the number of the expulsions is not largeB. the number of the expulsion is wrongC. there are soldiers hiding among the studentsD. guns are out of control in US schools
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The House Speaker and the temporary President of the Senate are usually（）Aelected by the majority partyBchosen from the majority and minority partiesCmembers of the majority partyDchosen freely from the Congressmen and Senators
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“球员”表包含以下列： 球员标识NUMBER（9） 姓氏VARCHAR2（20） 名字VARCHAR2（20） 球队标识NUMBER（4） 经理标识NUMBER（9） 位置标识NUMBER（4） 如果要显示“球队标识”列和“经理标识”列的唯一组合，应使用哪条SELECT语句？（）A、SELECT*FROM球员；B、SELECT球队标识，经理标识FROM球员；C、SELECTDISTINCT球队标识，经理标识FROM球员；（*）D、SELECT球队标识，DISTINCT经理标识FROM球员；E、SELECT球队标识，经理标识DISTINCTFROM球员；
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数据库中有一张表名称为Student，有列Number，Name，Age，IDCard，Sex。主键为Number。要求查询所有男同学信息，下列哪个SQL语句是正确的？（）A、Select* From Student Where Sex=’男’B、Select* From Student Where Number NotIn（Select Number From Student Where Sex=’男’）C、Select* From Student Where NumberIn（Select Numbe rFrom Student Where Sex=’男’）D、Select* From Student Where Sex’男’
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指出下面sql语句错误之处（） select id_number “Part Number”， sum（price） “price” from inventory where price 50 group by “Part Number” order by 2；A、order by 2B、from inventoryC、where price＞50D、group by “Part Number”
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Examine the description of the MARKS table: STD_ID NUMBER(4) STUDENT_NAME VARCHAR2(30) SUBJ1 NUMBER(3) SUBJ2 NUMBER(3) SUBJ3 NUMBER(3) SUBJ1, SUBJ2, and SUBJ3 indicate the marks (grades) obtained by a student in the three subjects. Which two statements are valid? （）A、SELECT SUM(subj1, subj2, subj3) FROM marks;B、SELECT SUM(subj1 + subj2 + subj3) FROM marks;C、SELECT SUM(subj1), SUM(subj2), SUM(subj3) FROM marks;D、SELECT MAX(subj1, subj2, subj3) FROM marks;E、SELECT MINIMUM(subj1) FROM marks;F、SELECT COUNT(std_id) FROM marks WHERE subj1 = AVG(subj1);
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Examine the description of the EMPLOYEES table: EMP_ID NUMBER(4) NOT NULL LAST_NAME VARCHAR2(30) NOT NULL FIRST_NAME VARCHAR2(30) DEPT_ID NUMBER(2) Which statement produces the number of different departments that have employees with last name Smith?（）A、SELECT COUNT(*) FROM employees WHERE last_name='Smith';B、SELECT COUNT(dept_id) FROM employees WHERE last_name='Smith';C、SELECT DISTINCT(COUNT(dept_id)) FROM employees WHERE last_name='Smith';D、SELECT COUNT(DISTINCT dept_id) FROM employees WHERE last_name='Smith';E、SELECT UNIQUE(dept_id) FROM employees WHERE last_name='Smith';
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Examine the structure of the EMP_DEPT_VU view: Column Name Type Remarks EMPLOYEE_ID NUMBER From the EMPLOYEES table EMP_NAME VARCHAR2(30) From the EMPLOYEES table JOB_ID VARCHAR2(20) From the EMPLOYEES table SALARY NUMBER From the EMPLOYEES table DEPARTMENT_ID NUMBER From the DEPARTMENTS table DEPT_NAME VARCHAR2(30) From the DEPARTMENTS table Which SQL statement produces an error?（）A、SELECT*FROMemp_dept_vu；B、SELECTdepartment_id，SUM（salary）FROMemp_dept_vuGROUPBYdepartment_id；C、SELECTdepartment_id，job_id，AVG（salary）FROMemp_dept_vuGROUPBYdepartment_id，job_id；D、SELECTjob_id，SUM（salary）FROMemp_dept_vuWHEREdepartment_idIN（10，20）GROUPBYjob_idHAVINGSUM（salary）；20000；E、Noneofthestatementsproduceanerror；allarevalid
考题
You need to design the restrictions on the Bank.Customers table. Which three actions should you perform?（）A、Design a trigger that verifies that the first names and surnames are not empty strings.B、Design a check constraint that verifies that the first names and surnames are not empty strings.C、Design a check constraint that uses a CLR user-defined function to verify that either the phone number is a null value or the format of the phone number is valid.D、Design a trigger that uses a CLR user-defined function to verify that either the phone number is a null value or the format of the phone number is valid.E、Design a check constraint that ensures that the phone number cannot be changed from a valid format to a null value or to an invalid format.F、Design a trigger that ensures that the phone number cannot be changed from a valid format to a null value.
考题
单选题From 1997 to 1998 the number of students enrolled in advanced mathematics courses increased by the same percent that student enrollment in advanced mathematics courses dropped from 1996 to 1997. What was the approximate number of students enrolled in advanced mathematics courses in 1998?A
420B
440C
450D
460E
480
考题
单选题指出下面sql语句错误之处（） select id_number “Part Number”， sum（price） “price” from inventory where price 50 group by “Part Number” order by 2；A
order by 2B
from inventoryC
where price＞50D
group by “Part Number”
考题
单选题The number of Congressmen from each state varies depending on （）A
the size of the areaB
the size of the populationC
the traditionD
the wealth
考题
单选题“雇员”表包含以下列： 雇员标识NUMBER 姓氏VARCHAR2（25） 名字VARCHAR2（25） 部门标识NUMBER 职务标识NUMBER 经理标识NUMBER 薪金NUMBER（9，2） 佣金NUMBER（7，2） 聘用日期DATE 以下哪条SELECT语句可用于显示部门70中薪金最低的10位员工（）A
SELECT ROWNUM排名，姓氏，名字雇员，薪金薪金FROM（SELECT 姓氏，名字，薪金 FROM 雇员ORDER BY 薪金）WHERE ROWNUM=10 AND job_id LIKE’CLERK’AND department_id=70B
SELECT ROWNUM排名，姓氏，名字雇员，薪金薪金FROM（SELECT 姓氏，名字，薪金，职务标识FROM 雇员 WHERE 职务标识 LIKE’CLERK’AND 部门标识=70ORDER BY 薪金）WHERE ROWNUM=10C
SELECT ROWNUM排名，姓氏，名字雇员，薪金薪金FROM（SELECT 姓氏，名字，薪金，职务标识，部门标识 FROM 雇员 WHERE ROWNUM=10ORDER BY 薪金）WHERE 职务标识 LIKE’CLERK’AND 部门标识=70D
唯一的方法是使用数据字典
考题
单选题The percent increase in the number of students enrolled in advanced mathematics courses from 1993 to 1994 exceeded the percent increase from 1995 to 1996 by approximately what percent?A
200B
133C
75D
67E
8
考题
单选题The House Speaker and the temporary President of the Senate are usually（）A
elected by the majority partyB
chosen from the majority and minority partiesC
members of the majority partyD
chosen freely from the Congressmen and Senators
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多选题数据库中有一张表名称为Student，有列Number，Name，Age，IDCard，Sex。主键为Number。统计学生总人数，下列哪个SQL语句是正确的（）ASelect Count（1）From StudentBSelect Sum（*）From StudentCSelec tAvg（*）From StudentDSelect Count（*）From Student
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单选题A centrifugal impeller consists of a number of vanes curving （） from the direction of rotation.A
backwardsB
forwardsC
upwardD
downwards
考题
单选题Examine the description of the EMPLOYEES table: EMP_ID NUMBER(4) NOT NULL LAST_NAME VARCHAR2(30) NOT NULL FIRST_NAME VARCHAR2(30) DEPT_ID NUMBER(2) Which statement produces the number of different departments that have employees with last name Smith? （）A
SELECT COUNT (*) FROM employees WHERE last _name='smith';B
SELECT COUNT (dept_id) FROM employees WHERE last _name='smith';C
SELECT DISTINCT (COUNT (dept_id) FROM employees WHERE last _name='smith';D
SELECT COUNT (DISTINCT dept_id) FROM employees WHERE last _name='smith';E
SELECT UNIQE (dept_id) FROM employees WHERE last _name='smith';
考题
单选题Examine the structure of the EMP_DEPT_VU view: Column Name Type Remarks EMPLOYEE_ID NUMBER From the EMPLOYEES table EMP_NAME VARCHAR2(30) From the EMPLOYEES table JOB_ID VARCHAR2(20) From the EMPLOYEES table SALARY NUMBER From the EMPLOYEES table DEPARTMENT_ID NUMBER From the DEPARTMENTS table DEPT_NAME VARCHAR2(30) From the DEPARTMENTS table Which SQL statement produces an error?（）A
SELECT * FROM emp_dept_vu;B
SELECT department_id, SUM(salary) FROM emp_dept_vu GROUP BY department _ id;C
SELECT department_id, job_id, AVG(salary) FROM emp_dept_vu GROUP BY department _ id, job_id;D
SELECT job_id, SUM(salary) FROM emp_dept_vu WHERE department_id IN (10,20) GROUP BY job_id HAVING SUM (salary) 20000E
None of the statements produce an error; all are valid.
考题
多选题Examine the description of the MARKS table: STD_ID NUMBER(4) STUDENT_NAME VARCHAR2(30) SUBJ1 NUMBER(3) SUBJ2 NUMBER(3) SUBJ3 NUMBER(3) SUBJ1, SUBJ2, and SUBJ3 indicate the marks (grades) obtained by a student in the three subjects. Which two statements are valid? （）ASELECT SUM(subj1, subj2, subj3) FROM marks;BSELECT SUM(subj1 + subj2 + subj3) FROM marks;CSELECT SUM(subj1), SUM(subj2), SUM(subj3) FROM marks;DSELECT MAX(subj1, subj2, subj3) FROM marks;ESELECT MINIMUM(subj1) FROM marks;FSELECT COUNT(std_id) FROM marks WHERE subj1 = AVG(subj1);
考题
单选题According to the passage, which of the following is NOT TRUE?A
Both ships were expensive ones.B
A similar number of women and children from both ships survived.C
About the same number of people from each ship died.D
Both ships had a similar number of passengers.
考题
单选题X = {-4,-2, 1,3}, Y= {-1,4,5}. If x is a number from set X, and y is a number from set Y. The probability that x + y is positive is closest to ______.A
0.5B
0.6C
0.7D
0.8E
0.9
考题
单选题From the perspective of traditional approach of syntax, noun has the categories of number, gender and________.A
aspectB
caseC
tenseD
voice
考题
单选题The report from the US Department of Education shows that ______.A
the number of the expulsions is not largeB
the number of the expulsions is wrongC
there are soldiers hiding among the studentsD
guns are out of control in US schools
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