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.。
团体心理辅导的功能表现在（） 教育功能。 发展功能。 预防功能。 矫正功能。
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?（） SELECT last_name, department_name, location_id FROM employees , department ;。 SELECT employees.last_name, departments.department_name, departments.location_id FROM employees e, departments D WHERE e.department_id = d.department_id;。 SELECT e.last_name, d.department_name, d.location_id FROM employees e, departments D WHERE manager_id = manager_id;。 SELECT e.last_name, d.department_name, d.location_id FROM employees e, departments D WHERE e.department_id = d.department_id。
《水利工程施工监理规范》规定：混凝土试样平行检测的检测数量不应少于承包人检测数量的3%，重要部位每种标号的混凝土最少取样1组。
实现五个目标应当坚持的指导思想是（）。 以邓小平理论和江泽民同志"三个代表"重要思想为指引。 坚决贯彻依法治国基本方略，结合深化税制改革和征管改革，将税收工作的重心转向法治导向型。 以整顿和规范税收秩序为着重点，以信息化建设为切入点，以建立健全内部执法监督机制为突破点。 以提高税务执法队伍素质为着力点，进一步规范税收执法行为，全面提升依法治税水平。
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？（）
