单选题Which of the following statements is true regarding the VERSIONS BETWEEN clause？（）A  The VERSIONS BETWEEN clause may be used in DML statements.B  The VERSIONS BETWEEN clause may be used in DDL statements.C  The VERSIONS BETWEEN clause may not be used t

第1题：

The relationship between the embedded clause and its matrix clause is one of a part to the whole.

A对

B错

第2题：

The relationship between the embedded clause and its matrix clause is one of a part to the whole.

第3题：

第4题：

Which two statements are true about WHERE and HAVING clauses? （）

• A、A WHERE clause can be used to restrict both rows and groups.
• B、A WHERE clause can be used to restrict rows only.
• C、A HAVING clause can be used to restrict both rows and groups.
• D、A HAVING clause can be used to restrict groups only.
• E、A WHERE clause CANNOT be used in a query of the query uses a HAVING clause.
• F、A HAVING clause CANNOT be used in subqueries.

第5题：

Which of the following statements best describes Flashback Versions Query？（）  

• A、 Flashback Versions Query is used to make changes to multiple versions of data that existed between two points in time.
• B、 Flashback Versions Query is used to view all version changes on rows that existed between the time  the query was executed and a point in time in the past.
• C、 Flashback Versions Query is used to view version changes and the SQL to undo those changes on rows that existed between two points in time.
• D、 Flashback Versions Query is used to view all version changes on rows that existed between two  points in time.

第6题：

Which two statements are true regarding the USING clause in table joins?（）

• A、It can be used to join a maximum of three tables 
• B、It can be used to restrict the number of columns used in a NATURAL join 
• C、It can be used to access data from tables through equijoins as well as nonequijoins 
• D、It can be used to join tables that have columns with the same name and compatible data types

第7题：

What is the use of an "all configuration" backup in Cisco UCS？（）

• A、 Can be used to migrate from a 6120 to a 6140 and retain the same service profiles
• B、 Can only be used on the fabric interconnect on which it was created
• C、 Can be used to migrate from a 6120 to 6140 and retain system IP addresses and cluster information
• D、 Can be used to match firmware versions between 6120 and 6140 during a migration

第8题：

第9题：

Which of the following statements is true regarding the VERSIONS BETWEEN clause？（）  

• A、 The VERSIONS BETWEEN clause may be used in DML statements.
• B、 The VERSIONS BETWEEN clause may be used in DDL statements.
• C、 The VERSIONS BETWEEN clause may not be used to query past DDL changes to tables.
• D、 The VERSIONS BETWEEN clause may not be used to query past DML statements to tables.

第10题：

On which two database objects can the VERSIONS clause of the Flashback Versions Query be used?（）

• A、fixed tables
• B、heap tables
• C、external tables
• D、temporary tables
• E、Index-Organized Tables (IOTs)