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QUESTION 41
Your database contains two tables named DomesticSalesOrders and InternationalSalesOrders. Both tables contain more than 100 million rows. Each table has a Primary Key column named SalesOrderId. The data
in the two tables is distinct from one another. Business users want a report that includes aggregate information about the total number of global sales and total sales amounts. You need to ensure that your query executes in the minimum possible time. Which query should you use?
A. SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount
FROM (
SELECT SalesOrderId, SalesAmount
FROM DomesticSalesOrders
UNION ALL
SELECT SalesOrderId, SalesAmount
FROM InternationalSalesOrders
) AS p
B. SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount
FROM (
SELECT SalesOrderId, SalesAmount
FROM DomesticSalesOrders
UNION
SELECT SalesOrderId, SalesAmount
FROM InternationalSalesOrders
) AS p
C. SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount
FROM DomesticSalesOrders
UNION
SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount
FROM InternationalSalesOrders
D. SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount
FROM DomesticSalesOrders
UNION ALL
SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount
FROM InternationalSalesOrders
Correct Answer: A
Explanation/Reference:
Verified answer as correct.
Reference: http://msdn.microsoft.com/en-us/library/ms180026.aspx
Reference: http://blog.sqlauthority.com/2009/03/11/sql-server-difference-between-union-vs-union-all- optimal-performance-comparison/

QUESTION 42
You are a database developer at an independent software vendor. You create stored procedures that contain proprietary code. You need to protect the code from being viewed by your customers. Which stored procedure option should you use?
A. ENCRYPTBYKEY B. ENCRYPTION
C. ENCRYPTBYPASSPHRASE D. ENCRYPTBYCERT
Correct Answer: B
Explanation/Reference:
Verified answer as correct.
Reference: http://technet.microsoft.com/en-us/library/bb510663.aspx Reference: http://technet.microsoft.com/en-us/library/ms174361.aspx Reference: http://msdn.microsoft.com/en-us/library/ms187926.aspx Reference: http://technet.microsoft.com/en-us/library/ms190357.aspx Reference: http://technet.microsoft.com/en-us/library/ms188061.aspx

QUESTION 43
You use a Microsoft SQL Server 2012 database. You want to create a table to store Microsoft Word documents. You need to ensure that the documents must only be accessible via Transact-SQL queries. Which Transact-SQL statement should you use?
A. CREATE TABLE DocumentStore
(
[Id] INT NOT NULL PRIMARY KEY, [Document] VARBINARY(MAX) NULL
)
GO
B. CREATE TABLE DocumentStore
(
[Id] hierarchyid,
[Document] NVARCHAR NOT NULL
)
GO
C. CREATE TABLE DocumentStore AS FileTable
D. CREATE TABLE DocumentStore
(
[Id] [uniqueidentifier] ROWGUIDCOL NOT NULL UNIQUE, [Document] VARBINARY(MAX) FILESTREAM NULL
)
GO
Correct Answer: A
Explanation/Reference: Verified answer as correcl
Reference: hllp:llmsdn. microsoft.com/en-us/libraIgg471497.aspx
Reference: hllp:llmsdn. microsoft.com/en-us/libra111929144. aspx

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