20 10 2016

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QUESTION 48
You need to recommend a solution that meets the concurrency problems.
What should you include in the recommendation?

A.    Modify the stored procedures to use the SERIALIZABLE isolation level.
B.    Modify the order in which usp_AcceptCandidate accesses the Applications table and the Candidates table.
C.    Modify the order in which usp_UpdateCandidate accesses the Applications table and the Candidates table.
D.    Modify the stored procedures to use the REPEATABLE READ isolation level.

Answer: C

QUESTION 49
You need to resolve the performance issues of the usp_ExportOpenings stored procedure.
The solution must minimize the amount of hard disk space used.
Which statement should you execute on DB1?

A.    EXEC sp_dboption ‘DB1’, ‘auto create statistics’, ‘TRUE’;
B.    CREATE INDEX IX_Exp_Openings ON Openings(PostDate, FilledDate) INCLUDE (Description,
Title, Salary);
C.    CREATE INDEX IX_Exp_Openings ON Openings(PostDate) INCLUDE (Description, Title,
Salary) WHERE FilledDate IS NULL;
D.    EXEC sp_recompile ‘usp_ExportOpenings’;

Answer: C

QUESTION 50
You need to implement a solution that meets the locking requirements.
Which line of code should you modify?

A.    Change line 07 in usp_UpdateOpening to:
UPDATE Openings WITH (UPDLOCK)
B.    Change line 09 in usp_GetOpenings to:
FROM Openings o (ROWLOCK)
C.    Change line 07 in usp_UpdateOpening to:
UPDATE Openings WITH (READPAST)
D.    Change line 09 in usp_GetOpenings to:
FROM Openings o (NOLOCK)

Answer: D

QUESTION 51
You need to implement a solution that meets the data recovery requirements.
You update each stored procedure to accept a parameter named @transactionID.
What should you add next to the beginning of each stored procedure?

A.    SAVE TRANSACTION WITH MARK @transactionID
B.    ROLLBACK DISTRIBUTED TRANSACTION @transactionID
C.    BEGIN TRANSACTION WITH MARK @transactionID
D.    COMMIT TRANSACTION @transactionID

Answer: C

Case Study 6 – Coho Winery (Question 52 – Question 65)
Overview
You are a database developer for a company named Coho Winery. Coho Winery has an office in London.
Coho Winery has an application that is used to process purchase orders from customers and retailers in 10 different countries.
The application uses a web front end to process orders from the Internet. The web front end adds orders to a database named Sales. The Sales database is managed by a server named Server1.
An empty copy of the Sales database is created on a server named Server2 in the London office. The database will store sales data for customers in Europe.
A new version of the application is being developed. In the new version, orders will be placed either by using the existing web front end or by loading an XML file.
Once a week, you receive two files that contain the purchase orders and the order details of orders from offshore facilities.
You run the usp_ImportOders stored procedure and the usp_ImportOrderDetails stored procedure to copy the offshore facility orders to the Sales database.
The Sales database contains a table named Orders that has more than 20 million rows.
Database Definitions
Database and Tables
The following scripts are used to create the database and its tables:

Stored Procedures
The following are the definitions of the stored procedures used in the database:

Indexes
The following indexes are part of the Sales database:

Data Import
The XML files will contain the list of items in each order. Each retailer will have its own XML schema and will be able to use different types of encoding. Each XML schema will use a default namespace. The default namespaces are not guaranteed to be unique.
For testing purposes, you receive an XSD file from a customer.
For testing purposes, you also create an XML schema collection named ValidateOrder. ValidateOrder contains schemas for all of the retailers.
The new version of the application must validate the XML file, parse the data, and store the parsed data along with the original XML file in the database. The original XML file must be stored without losing any data.
Reported Issues
Performance Issues
You notice the following for the usp_GetOrdersAndItems stored procedure:
The stored procedure takes a long time to complete. Less than two percent of the rows in the Orders table are retrieved by usp_GetOrdersAndItems.
A full table scan runs when the stored procedure executes. The amount of disk space used and the amount of time required to insert data are very high.
You notice that the usp_GetOrdersByProduct stored procedure uses a table scan when the stored procedure is executed.
Page Split Issues
Updates to the Orders table cause excessive page splits on the IX_Orders_ShipDate index.
Requirements
Site Requirements
Users located in North America must be able to view sales data for customers in North America and Europe in a single report. The solution must minimize the amount of traffic over the WAN link between the offices.
Bulk Insert Requirements
The usp_ImportOrderDetails stored procedure takes more than 10 minutes to complete.
The stored procedure runs daily. If the stored procedure fails, you must ensure that the stored procedure restarts from the last successful set of rows.
Index Monitoring Requirements
The usage of indexes in the Sales database must be monitored continuously. Monitored data must be maintained if a server restarts. The monitoring solution must minimize the usage of memory resources and processing resources.

QUESTION 52
You need to implement a solution that meets the site requirements.
What should you implement?

A.    A non-indexed view on Server1
B.    A non-indexed view on Server2
C.    A distributed view on Server1
D.    A distributed view on Server2

Answer: C

QUESTION 53
You need to modify usp_GetOrdersAndItems to ensure that an order is NOT retrieved by usp_GetOrdersAndItems while the order is being updated.
What should you add to usp_GetOrdersAndItems?

A.    Add SET TRANSACTION ISOLATION LEVEL SERIALIZABLE to line 03.
B.    Add SET TRANSACTION ISOLATION LEVEL SNAPSHOT to line 03.
C.    Add (UPDLOCK) to the end of line 06.
D.    Add (READPAST) to the end of line 06.

Answer: D

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