[单选]

The validate_password plugin is loaded and displays the following settings in global variables: Mysql＞ SHOW VARIABLES LIKE ‘validate_password%’;

When attempting to set your password, you get the following error: Mysql＞ SET PASSWORD = PASSWORD (‘Hoverl@%’);
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements What is the cause of the error?（）

You decided to configure the flash recovery area in your database to centralize the storage of all the recovery files in a certain location on disk. Which two parameters will you specify in the init.ora file？（）  DB_CREATE_FILE_DEST。  DB_RECOVERY_FILE_DEST。  DB_RECOVERY_FILE_DEST_SIZE。  DB_ONLINE_LOG_DEST_。 社会角色的扮演 Which three statements about subqueries are true?（） A single row subquery can retrieve only one column and one row.。 A single row subquery can retrieve only one row but many columns.。 A multiple row subquery can retrieve multiple rows and multiple columns.。 A multiple row subquery can be compared by using the “>” operator.。 A single row subquery can use the IN operator.。 A multiple row subquery can use the “=” operator.。 蓄水安全鉴定程序中设计、施工、监理、运行等建设各方分别编写（）。 自检报告。 可行性研究报告。 初步设计。 鉴定报告。 Evaluate the following statements：   CREATE TABLE purchase_orders （po_id NUMBER（4），  po_date TIMESTAMP， supplier_id NUMBER（6）， po_total NUMBER（8，2），  CONSTRAINT order_pk PRIMARY KEY（po_id）） PARTITION BY RANGE（po_date）  （PARTITION Q1 VALUES LESS THAN （TO_DATE（？1-apr-2007？d-mon-yyyy？）， PARTITION Q2 VALUES LESS THAN  （TO_DATE（？1-jul-2007？d-mon-yyyy？），  PARTITION Q3 VALUES LESS THAN（TO_DATE（？1-oct - 2007？d-mon-yyyy？）， PARTITION Q4 VALUES LESS THAN （TO_DATE（？1-jan-2008？d-mon-yyyy？））；  CREATE TABLE purchase_order_items （po_id NUMBER（4） NOT NULL， product_id NUMBER（6） NOT NULL， unit_price NUMBER（8，2）， quantity NUMBER（8）， CONSTRAINT po_items_fk FOREIGN KEY  （po_id） REFERENCES purchase_orders（po_id）） PARTITION BY REFERENCE（po_items_fk）；   What are the two consequences of the above statements？（）  Partitions of PURCHASE_ORDER_ITEMS have system-generated names.。  Both PURCHASE_ORDERS and PURCHASE_ORDER_ITEMS tables are created with four partitions each. 。  Partitions of the PURCHASE_ORDER_ITEMS table exist in the same tablespaces as the partitions of the PURCHASE_ORDERS table.。  The PURCHASE_ORDER_ITEMS table inherits the partitioning key from the parent table by automatically duplicating the key columns.。  Partition maintenance operations performed on the PURCHASE_ORDER_ITEMS table are automatically reflected in the PURCHASE_ORDERS table.。

The validate_password plugin is loaded and displays the following settings in global variables: Mysql＞ SHOW VARIABLES LIKE ‘validate_password%’;

When attempting to set your password, you get the following error: Mysql＞ SET PASSWORD = PASSWORD (‘Hoverl@%’);
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements What is the cause of the error?（）