A
B
C
D
第1题：
A.A
B.B
C.C
D.D
第2题：
A.Table
B.Columns
C.Table and Alias
D.Columns and Alias
第3题：
A.A
B.B
C.C
D.D
E.E
第4题：
Which two operations can be performed on an external table（）
第5题：
You are responsible for a data warehouse application that uses records from an external table to update one of the dimension tables periodically. The records in the external table may contain data for new rows in the dimension table， or for updates to its existing rows. Which type of SQL command would you use to transfer the data from the external table to the dimension table as efficiently as possible？（）
第6题：
A.A
B.B
C.C
D.D
第7题：
A user utilizing an alias to update a subset of columns in a table must have UPDATE privileges on which of the following DB2 objects?（）
第8题：
A.A
B.B
C.C
D.D
E.E
第9题：
You just issued the following statement: ALTER TABLE SALES DROP COLUMN PROFIT. Which of the following choices identifies when the column will actually be removed from Oracle?（）
第10题：
User Scott has updated the salary of one of the employees in the EMPLOYEES table and has not committed the transaction. What are the two types of locks that this scenario would lead to？（）