Monday, April 17, 2017

Update Querying Microsoft SQL Server 2012 70-461 training material

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Share some MCSA 70-461 exam questions and answers below.
You develop a database for a travel application. You need to design tables and other database objects. You create a stored procedure. You need to supply the stored procedure with multiple event names and their dates as parameters. What should you do? 
A. Use the CAST function. 
B. Use the DATE data type. 
C. Use the FORMAT function. 
D. Use an appropriate collation. 
E. Use a user-defined table type. 
F. Use the VARBINARY data type. 
G. Use the DATETIME data type. 
H. Use the DATETIME2 data type. 
I. Use the DATETIMEOFFSET data type. 
J. Use the TODATETIMEOFFSET function. 
Answer: E

You develop a Microsoft SQL Server 2012 database. The database is used by two web applications that access a table named Products.You want to create an object that will prevent the applications from accessing the table directly while still providing access to the required data.You need to ensure that the following requirements are met: 
Future modifications to the table definition will not affect the applications' ability to access data. 
The new object can accommodate data retrieval and data modification. 
You need to achieve this goal by using the minimum amount of changes to the existing applications. What should you create for each application? 
A. views 
B. table partitions 
C. table-valued functions 
D. stored procedures 
Answer: A

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 
Answer: A

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