[单选]
Examine the structure of the EMPLOYEES and DEPARTMENTS tables:
EMPLOYEES
EMPLOYEE_ID NUMBER
DEPARTMENT_ID NUMBER
MANAGER_ID NUMBER
LAST_NAME VARCHAR2(25)
DEPARTMENTS
DEPARTMENT_ID NUMBER
MANAGER_ID NUMBER
DEPARTMENT_NAME VARCHAR2(35)
LOCATION_ID NUMBER
You want to create a report displaying employee last names, department names, and locations. Which query should you use to create an equi-join?（）

A . SELECT last_name, department_name, location_id FROM employees , department ;
B . SELECT employees.last_name, departments.department_name, departments.location_id FROM employees e, departments D WHERE e.department_id = d.department_id;
C . SELECT e.last_name, d.department_name, d.location_id FROM employees e, departments D WHERE manager_id = manager_id;
D . SELECT e.last_name, d.department_name, d.location_id FROM employees e, departments D WHERE e.department_id = d.department_id

What is the location for the application server scripts？（） wastools directory in IBM Tivoli Workload Scheduler bin directory。 wastools directory in IBM Tivoli Workload Automation home directory。 appserver directory in IBM Tivoli Workload Scheduler parent directory。 appserver directory in IBM Tivoli Workload Automation home directory。《水电站大坝安全管理规定》有关大坝工程建设的主要规定中对于坝高（）m以上的高坝或者监测系统复杂的中坝、低坝，项目法人应当按照国家有关规定，组织有关单位对水电站大坝监测系统进行专项设计、专项审查。 40。 60。 70。 80。 Which statements are true regarding system-partitioned tables？（） Only a single partitioning key column can be specified.。 All DML statements must use partition-extended syntax.。 The same physical attributes must be specified for each partition.。 Unique local indexes cannot be created on a system-partitioned table.。 Traditional partition pruning and partitionwise joins are not supported on these tables.。 You are working as a DBA at NetFx Corporation. You discover that the SCOTT schema is deleted by mistake. You decide to flash the database back to the time when the schema existed. Which view will you query to determine the estimated size of the flashback data that you require for your current target retention？（） V$FLASHBACK_DATABASE_LOG。 V$FLASHBACK_DATABASE_STAT。 V$DATABASE。 V$UNDOSTAT。 What is the result？（） Compilation fails.。 An exception is thrown at runtime.。 The code executes and prints "running".。 The code executes and prints "runningrunning".。 The code executes and prints "runningrunningrunning".。

Examine the structure of the EMPLOYEES and DEPARTMENTS tables:
EMPLOYEES
EMPLOYEE_ID NUMBER
DEPARTMENT_ID NUMBER
MANAGER_ID NUMBER
LAST_NAME VARCHAR2(25)
DEPARTMENTS
DEPARTMENT_ID NUMBER
MANAGER_ID NUMBER
DEPARTMENT_NAME VARCHAR2(35)
LOCATION_ID NUMBER
You want to create a report displaying employee last names, department names, and locations. Which query should you use to create an equi-join?（）

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