What are two reasons to create synonyms? ()
第1题:
A.You want to create a nonequijoin.
B.The tables to be joined have multiple NULL columns.
C.The tables to be joined have columns of the same name and different data types.
D.The tables to be joined have columns with the same name and compatible data types.
E.You want to use a NATURAL join, but you want to restrict the number of columns in the join condition.
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第7题:
What a beautiful dress you have on today!()
第8题:
You are using flat files as the data source for one of your data warehousing applications. You plan to move the data from the flat file structures to an Oracle database to optimize the application performance. In your database you have clustered tables. While migrating the data, you want to have minimal impact on the database performance and optimize the data load operation. Which method would you use to load data into Oracle database?()
第9题:
An error is generated.
You will have two identical tables in the HR schema with different names.
You create a table called employees in the HR schema based on you EMP table.
You create an alternative name for the employees table in the HR schema in your own schema.
第10题:
You want to create a nonequijoin.
The tables to be joined have multiple NULL columns.
The tables to be joined have columns of the same name and different data types.
The tables to be joined have columns with the same name and compatible data types.
You want to use a NATURAL join, but you want to restrict the number of columns in the join condition.
第11题:
You have too many tables.
Your tables are too long.
Your tables have difficult names.
You want to work on your own tables.
You want to use another schema's tables.
You have too many columns in your tables.
第12题:
Why did you ask?
Have you finished your dinner yet?
I have seen French movies many times.
I’d love to, but I have a lot of work to do.
第13题:
If you don't answer your friends' letters, it seems to say that ______.
A. your friends is too busy to read a letter
B. your friend hates to receive a letter
C. your friend is not worthy of your letter
D. your friend should not have written you a letter
40.答案为C。根据题干找到第二段最后一句,To a letter unanswered is like saying,“I don't think you are worth the time and effort it takes to write a letter.”作出该项选择。
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第19题:
What is necessary for your query on an existing view to execute successfully? ()
第20题:
Examine the statement: Create synonym emp for hr. employees; What happens when you issue the statement? ()
第21题:
should pass
should have passed
must pass
must have passed
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第23题:
wait
to wait
waited