A PL/SQL procedure queries only those columns of a redefined table that were unchanged by the online table redefinition. What happens to the PL/SQL procedure after the online table redefinition?()
You are designing a strategy to ensure that DNS queries always take the most efficient route to get resolved. Which action or actions should you perform?()
Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 1 4 1 3 1 2 Table T2: C1 C2 1 1 1 2 1 3 Which of the following queries will return only those rows that exist in both T1 and T2?()
You want a record of all queries that are not using indexes. How would you achieve this?()
举例说明什么是空间数据、非空间数据?如何理解空间查询(spatial queries)和非空间查询的区别(Non-spatial queries)?