[Free] 2018(May) EnsurePass Examcollection Microsoft 70-461 Dumps with VCE and PDF 101-110

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Querying Microsoft SQL Server 2012

Question No: 101

You are developing a database application by using Microsoft SQL Server 2012. An application that uses a database begins to run slowly.

You discover that during reads, the transaction experiences blocking from concurrent updates.

You need to ensure that throughout the transaction the data maintains the original version. What should you do?

  1. Add a HASH hint to the query.

  2. Add a LOOP hint to the query.

  3. Add a FORCESEEK hint to the query.

  4. Add an INCLUDE clause to the index.

  5. Add a FORCESCAN hint to the Attach query.

  6. Add a columnstore index to cover the query.

  7. Enable the optimize for ad hoc workloads option.

  8. Cover the unique clustered index with a columnstore index.

  9. Include a SET FORCEPLAN ON statement before you run the query.

  10. Include a SET STATISTICS PROFILE ON statement before you run the query.

  11. Include a SET STATISTICS SHOWPLAN_XML ON statement before you run the query.

  12. Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query.

  13. Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query.

  14. Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query.

Answer: M

Question No: 102

You administer a Microsoft SQL Server 2012 database. The database contains a Product table created by using the following definition:

image

You need to ensure that the minimum amount of disk space is used to store the data in the Product table.

What should you do?

  1. Convert all indexes to Column Store indexes.

  2. Implement Unicode Compression.

  3. Implement row-level compression.

  4. Implement page-level compression.

Answer: D

Reference: http://msdn.microsoft.com/en-us/library/cc280449.aspx Reference: http://msdn.microsoft.com/en-us/library/cc280464.aspx Reference: http://msdn.microsoft.com/en-us/library/cc280576.aspx Reference: http://msdn.microsoft.com/en-us/library/ee240835.aspx

Question No: 103

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#39; 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?

  1. views

  2. table partitions

  3. table-valued functions

  4. stored procedures

Answer: A

Question No: 104

You are a database developer of a Microsoft SQL Server database.

You are designing a table that will store Customer data from different sources. The table will include a column that contains the CustomerID from the source system and a column that contains the SourceID.

A sample of this data is as shown in the following table.

image

You need to ensure that the table has no duplicate CustomerID within a SourceID. You also need to ensure that the data in the table is in the order of SourceID and then CustomerID.

Which Transact- SQL statement should you use?

  1. CREATE TABLE Customer(SourceID int NOT NULL,CustomerID int NOT NULL,CustomerName varchar(255) NOT NULLCONSTRAINT UQ_Customer UNIQUE(SourceID, CustomerID));

  2. CREATE TABLE Customer(SourceID int NOT NULL UNIQUE,CustomerID int NOT NULL UNIQUE,CustomerName varchar(255) NOT NULL);

  3. CREATE TABLE Customer(SourceID int NOT NULL PRIMARY KEY CLUSTERED,CustomerID int NOT NULL UNIQUE,CustomerName varchar(255) NOT NULL);

  4. CREATE TABLE Customer(SourceID int NOT NULL,CustomerID int NOT NULL,CustomerName varchar(255) NOT NULL,CONSTRAINT PK_Customer PRIMARY KEY CLUSTERED(SourceID, CustomerID));

Answer: D Explanation:

A PRIMARY KEY is a constraint that enforces entity integrity for a specified column or columns by using a unique index. Only one PRIMARY KEY constraint can be created for each table.

We need to use both SourceID and CustomerID, in that order, in the PRIMARY KEY constraint.

References:https://msdn.microsoft.com/en-us/library/ms188066.aspx

Question No: 105

You develop a Microsoft SQL Server 2012 server database that supports an application. The application contains a table that has the following definition:

CREATE TABLE Inventory (

ItemID int NOT NULL PRIMARY KEY,

ItemsInStore int NOT NULL, ItemsInWarehouse int NOT NULL)

You need to create a computed column that returns the sum total of the ItemsInStore and ItemsInWarehouse values for each row.

The new column is expected to be queried heavily, and you need to be able to index the column. Which Transact-SQL statement should you use?

  1. ALTER TABLE Inventory

    ADD TotalItems AS ItemslnStore ItemsInWarehouse

  2. ALTER TABLE Inventory

    ADD TotalItems AS ItemsInStore ItemsInWarehouse PERSISTED

  3. ALTER TABLE Inventory

    ADD TotalItems AS SUM(ItemsInStore, ItemsInWarehouse) PERSISTED

  4. ALTER TABLE Inventory

ADD TotalItems AS SUM(ItemsInStore, ItemsInWarehouse)

Answer: B

Reference: http://msdn.microsoft.com/en-us/library/ms174979.aspx

Question No: 106 DRAG DROP

You create a view based on the following statement:

image

You grant the Select permission to User1 for this view.

You need to change the view so that it displays only the records that were processed in the month prior to the current month. You need to ensure that after the changes, the view functions correctly for User1.

Which four Transact-SQL statements should you use? (To answer, move the appropriate SQL statements from the list of statements to the answer area and arrange them in the correct order.)

image

Answer:

image

Question No: 107

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?

  1. CREATE TABLE DocumentStore (

    [Id] INT NOT NULL PRIMARY KEY, [Document] VARBINARY(MAX) NULL

    ) GO

  2. CREATE TABLE DocumentStore (

    [Id] hierarchyid,

    [Document] NVARCHAR NOT NULL

    )

    GO

  3. CREATE TABLE DocumentStore AS FileTable

  4. CREATE TABLE DocumentStore (

[Id] [uniqueidentifier] ROWGUIDCOL NOT NULL UNIQUE, [Document] VARBINARY(MAX) FILESTREAM NULL

) GO

Answer: A

Reference: http://msdn.microsoft.com/en-us/library/gg471497.aspx Reference: http://msdn.microsoft.com/en-us/library/ff929144.aspx

Question No: 108

You are developing a database application by using Microsoft SQL Server 2012. An application that uses a database begins to run slowly.

You discover that a large amount of memory is consumed by single-use dynamic queries.

You need to reduce procedure cache usage from these statements without creating any additional indexes.

What should you do?

  1. Add a HASH hint to the query.

  2. Add a LOOP hint to the query.

  3. Add a FORCESEEK hint to the query.

  4. Add an INCLUDE clause to the index.

  5. Add a FORCESCAN hint to the Attach query.

  6. Add a columnstore index to cover the query.

  7. Enable the optimize for ad hoc workloads option.

  8. Cover the unique clustered index with a columnstore index.

  9. Include a SET FORCEPLAN ON statement before you run the query.

  10. Include a SET STATISTICS PROFILE ON statement before you run the query.

  11. Include a SET STATISTICS SHOWPLAN_XML ON statement before you run the query.

  12. Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement

    before you run the query.

  13. Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query.

  14. Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query.

Answer: G

Reference: http://msdn.microsoft.com/en-us/library/cc645587.aspx

Question No: 109

You generate a daily report according to the following query:

image

You need to improve the performance of the query. What should you do?

  1. Drop the UDF and rewrite the report query as follows: WITH cte(CustomerID, LastOrderDate) AS (

    SELECT CustomerID, MAX(OrderDate) AS [LastOrderDate] FROM Sales.SalesOrder

    GROUP BY CustomerID

    )

    SELECT c.CustomerName FROM cte

    INNER JOIN Sales.Customer c ON cte.CustomerID = c.CustomerID WHERE cte.LastOrderDate lt; DATEADD(DAY, -90, GETDATE())

  2. Drop the UDF and rewrite the report query as follows: SELECT c.CustomerName

    FROM Sales.Customer c WHERE NOT EXISTS (

    SELECT s.OrderDate FROM Sales.SalesOrder s

    WHERE s.OrderDate gt; DATEADD(DAY, -90, GETDATE())

    AND s.CustomerID = c.CustomerID)

  3. Drop the UDF and rewrite the report query as follows: SELECT DISTINCT c.CustomerName

    FROM Sales.Customer c

    INNER JOIN Sales.SalesOrder s ON c.CustomerID = s.CustomerID WHERE s.OrderDate lt; DATEADD(DAY, -90, GETDATE())

  4. Rewrite the report query as follows: SELECT c.CustomerName

FROM Sales.Customer c

WHERE NOT EXISTS (SELECT OrderDate FROM

Sales.ufnGetRecentOrders(c.CustomerID, 90)) Rewrite the UDF as follows:

CREATE FUNCTION Sales.ufnGetRecentOrders(@CustomerID int, @MaxAge datetime) RETURNS TABLE AS RETURN (

SELECT OrderDate FROM Sales.SalesOrder s

WHERE s.CustomerID = @CustomerID

AND s.OrderDate gt; DATEADD(DAY, -@MaxAge, GETDATE())

Answer: A

Question No: 110 CORRECT TEXT

You need to create a query that calculates the total sales of each OrderID from a table named Sales.Details. The table contains two columns named OrderID and ExtendedAmount.

The solution must meet the following requirements:

-> Use one-part names to reference columns.

-> Order the results by OrderID with the smallest value first.

-> NOT depend on the default schema of a user.

-> Use an alias of TotalSales for the calculated ExtendedAmount.

-> Display only the OrderID column and the calculated TotalSales column.

Provide the correct code in the answer area. Key Words:

image

Answer: SELECT OrderId, SUM(ExtendedAmount) AS TotalSales FROM Sales.Details

ORDER BY OrderID ASC

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