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70-761 受験体験 & 70-761 学習教材

2017-06-19 15:08:47 | 日記

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70-761試験番号:70-761 日本語版テキスト内容
試験科目:「Querying Data with Transact-SQL」
最近更新時間:2017-06-18
問題と解答:60

>> 70-761 日本語版テキスト内容


 

70-761 受験体験のIT専門家たちは彼らの豊富な知識と経験を活かして最新の短期で成果を取るトレーニング方法を研究しました。このトレーニング方法は受験生の皆さんに短い時間で予期の成果を取らせます。特に仕事しながら勉強している受験生たちにとって不可欠なツールです。70-761 受験体験を選んだら、あなたは自分の夢を実現できます。


NO.1 HOTSPOT
Note: This question is part of a series of questions that use the same scenario. For your convenience,
the scenario is repeated in each question. Each question presents a different goal and answer
choices, but the text of the scenario is exactly the same in each question in this series.
You query a database that includes two tables: Project and Task. The Project table includes the
following columns:
You need to identify the owner of each task by using the following rules:
- Return each task's owner if the task has an owner.
- If a task has no owner, but is associated with a project that has an owner, return the project's owne
r.
- Return the value -1 for all other cases.
How should you complete the Transact-SQL statement? To answer, select the appropriate
Transact-SQL segments in the answer area.
Answer:
Explanation:
Box 1: COALESCE
COALESCE evaluates the arguments in order and returns the current value of the first expression that
initially does not evaluate to NULL.
Box 2: T.UserID, p.UserID, -1
- Return each task's owner if the task has an owner.
- If a task has no owner, but is associated with a project that has an owner, return the project's owne
r.
- Return the value -1 for all other cases.
Box 3: RIGHT JOIN
The RIGHT JOIN keyword returns all rows from the right table (table2), with the matching rows in the
left table (table1). The result is NULL in the left side when there is no match.
Here the right side could be NULL as the projectID of the task could be NULL.
References:
https://msdn.microsoft.com/en-us/library/ms190349.aspx
http://www.w3schools.com/Sql/sql_join_right.asp

NO.2 Note: This question is part of a series of questions that present the same scenario. Each
question in the series contains a unique solution that might meet the stated goals. Some question
sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section. you will NOT be able to return to it. As a result, these
questions will not appear in the review screen.
You create a table named Customer by running the following Transact-SQL statement:
You must insert the following data into the Customer table:
You need to ensure that both records are inserted or neither record is inserted.
Solution: You run the following Transact-SQL statement:
Does the solution meet the goal?
A. Yes
B. No
Answer: B

70-761 時間   
Explanation:
As there are two separate INSERT INTO statements we cannot ensure that both or neither records is
inserted.

NO.3 Note: This question is part of a series of questions that present the same scenario. Each
question in the series contains a unique solution that might meet the stated goals. Some question
sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section. you will NOT be able to return to it. As a result, these
questions will not appear in the review screen.
You have a database that tracks orders and deliveries for customers in North America. The database
contains the following tables:
Sales.Customers
Application.Cities
Sales.CustomerCategories
The company's development team is designing a customer directory application. The application
must list customers by the area code of their phone number. The area code is defined as the first
three characters of the phone number.
The main page of the application will be based on an indexed view that contains the area and phone
number for all customers.
You need to return the area code from the PhoneNumber field.
Solution: You run the following Transact-SQL statement:
Does the solution meet the goal?
A. Yes
B. No
Answer: B

70-761 通信   
Explanation:
The variable max, in the line DECLARE @areaCode nvarchar(max), is not defined.

NO.4 DRAG DROP
Note: This question is part of a series of questions that use the same scenario. For your convenience,
the scenario is repeated in each question. Each question presents a different goal and answer
choices, but the text of the scenario is exactly the same in each question in this series.
You are developing a database to track customer orders. The database contains the following tables:
Sales.Customers, Sales.Orders, and Sales.OrderLines. The following table describes the columns in
Sales.Customers.
The following table describes the columns in Sales.Orders.
The following table describes the columns in Sales.OrderLines.
You need to create a function that calculates the highest tax rate charged for an item in a specific
order.
Which five Transact-SQL segments should you use to develop the solution? To answer, move the
appropriate Transact-SQL segments from the list of Transact-SQL segments to the answer area and
arrange them in the correct order.
Answer:
Explanation:
Box 1: CREATE FUNCTION...@OrderID
Include definition for the ...@OrderID parameter.
Box 2: RETURNS decimal(18,2)
The function is defined to return a scalar value.
Box 3: AS BEGIN ...
Declare the local variables of the function.
Box 4: SET @CalculatedTaxRate = (..
Calculate the tax rate.
Box 5: RETURN @CalculatedRate END
Return a scalar value.
References: https://msdn.microsoft.com/en-us/library/ms186755.aspx


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