Linux基础41学习内容： 一. 对sdb进行分区操作 1. 分区表类型 1）msdos 支持的分区数量有限，最多4个大分区，单个分区最大2TB 2）GPT 支持的分区数量无限制，单个分区最大18EB ...

Choose two. Examine this SQL statement: UPDATE orders o SET customer_name = (SELECT cust_last_name FROM customers WHERE customer_id=o.customer_id); Which two are true? A) The subquery is executed befo ...

Choose the best answer. Examine this query: SELECT TRUNC (ROUND(156.00,-2),-1) FROM DUAL; What is the result? A) 16 B) 160 C) 150 D) 200 E) 100 **** 本内容被作者隐藏 ****

Choose two Which three statements are true about dropping and unused columns in an Oracle database? A) A primary key column referenced by another column as a foreign key can be dropped if using the CA ...

Choose two. Which two statements are true about a self join? A) The join key column must have an index. B) It can be a left outer join. C) It must be a full outer join. D) It can be an inner join. E) ...

Choose two Which two statements are true about Oracle synonyms? A) A synonym can have a synonym. B) All private synonym names must be unique in the database. C) Any user can create a PUBLIC synonym. D ...

Choose three Which three statements are true about views in an Oracle database? A) A SELECT statement cannot contain a where clause when querying a view containing a WHERE clause in its defining query ...

Choose the best answer The EMPLOYEES table contains columns EMP_ID of data type NUMBER and HIRE_DATE of data type DATE You want to display the date of the first Monday after the completion of six mont ...