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单选题
（）the number of paid holidays enjoyed by most employees in the company, three weeks of vacation seems generous.
A
Compared with
B
Compared
C
Comparing with
D
Comparing
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单选题Examine the structures of the EMPLOYEES and TAX tables. EMPLOYEES EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2 (30) JOB_ID VARCHAR2 (20) SALARY NUMBER References MGR_ID NUMBER EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT _ID column of the DEPARTMENT table TAX MIN_SALARY NUMBER MAX_SALARY NUMBER TAX_PERCENT NUMBER Percentage tax for given salary range You need to find the percentage tax applicable for each employee. Which SQL statement would you use?（）A
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考题
单选题If employees work on public holidays, usually they will get _____.A
Extra days offB
extra moneyC
A pay raiseD
paid holidays
考题
单选题What is true about employees paid wages by the hour?A
They will get a week of paid vacation.B
They will not work during the month of March.C
They will help with the maintenance work.D
They will not receive payment during the closure.
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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In which scenario would TOP N analysis be the best solution? （）A
You want to identify the most senior employee in the company.B
You want to find the manager supervising the largest number of employees.C
You want to identify the person who makes the highest salary for all employees.D
You want to rank the top three sales representatives who have sold the maximum number of products.
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单选题You added a PHONE_NUMBER column of NUMBER data type to an existing EMPLOYEES table. The EMPLOYEES table already contains records of 100 employees. Now, you want to enter the phone numbers of each of the 100 employees into the table. Some of the employees may not have a phone number available. Which data manipulation operation do you perform?（）A
MERGEB
INSERTC
UPDATED
ADDE
ENTERF
You cannot enter the phone numbers for the existing employee records.
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SELECT dept_id, job_cat, MAX(salary) FROM employees WHERE salary MAX (salary);B
SELECT dept_id, job_cat, MAX(salary) FROM employees GROUP BY dept_id,job_cat;C
SELECT dept_id, job_cat, MAX(salary) FROM employees;D
SELECT dept_id, job_cat, MAX(salary) FROM employees GROUP BY dept_id;E
SELECT dept_id, job_cat, MAX(salary) FROM employees GROUP BY dept _ id job _ cat salary;
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单选题Examine the structure of the EMPLOYEES, DEPARTMENTS, and TAX tables. EMPLOYEES NOT NULL, Primary EMPLOYEE_ID NUMBER Key VARCHAR2 EMP_NAME (30) VARCHAR2 JOB_ID (20) SALARY NUMBER References MGR_ID NUMBER EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT_ID column of the DEPARTMENTS table DEPARTMENTS NOT NULL, DEPARTMENT_ID NUMBER Primary Key VARCHAR2 DEPARTMENT_NAME |30| References MGR_ID column MGR_ID NUMBER of the EMPLOYEES table TAX MIN_SALARY NUMBER MAX_SALARY NUMBER TAX_PERCENT NUMBER For which situation would you use a nonequijoin query?（）A
To find the tax percentage for each of the employees.B
To list the name, job id, and manager name for all the employees.C
To find the name, salary, and department name of employees who are not working with Smith.D
To find the number of employees working for the Administrative department and earning less then 4000.E
To display name, salary, manager ID, and department name of all the employees, even if the employees do not have a department ID assigned.
考题
单选题According to the passage employees should be paid _____.A
monthly in cashB
weekly by bankC
regularly by checkD
properly in time
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