Microsoft 070-457 : Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 1

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Microsoft Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 1 Sample Questions:

1. You are developing a database application by using Microsoft SQL Server 2012. You have a query that runs slower than expected. You need to capture execution plans that will include detailed information on missing indexes recommended by the query optimizer. What should you do?

A) Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query.
B) Include a SET STATISTICS PROFILE ON statement before you run the query.
C) Add a HASH hint to the query.
D) Cover the unique clustered index with a columnstore index.
E) Include a SET FORCEPLAN ON statement before you run the query.
F) Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query.
G) Add a FORCESCAN hint to the Attach query.
H) Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query.
I) Add an INCLUDE clause to the index.
J) Add a LOOP hint to the query.
K) Include a SET STATISTICS SHOWPLAN_XML ON statement before you run the query.
L) Add a columnstore index to cover the query.
M) Enable the optimize for ad hoc workloads option.
N) Add a FORCESEEK hint to the query.

2. You have a database that contains the tables shown in the exhibit. (Click the Exhibit button.)

You deploy a new server that has SQL Server 2012 installed. You need to create a table named Sales. OrderDetails on the new server. Sales.OrderDetails must meet the following requirements:
Write the results to a disk.
Contain a new column named LineItemTotal that stores the product of ListPrice and Quantity for each row.
The code must NOT use any object delimiters.
The solution must ensure that LineItemTotal is stored as the last column in the table. Which code segment
should you use?
To answer, type the correct code in the answer area.

A) CREATE TABLE Sales.OrderDetails ( ListPrice money not null, Quantity int not null, LineItemTotal as (ListPrice * Quantity) PERSISTED)
B) CREATE TABLE Sales.OrderDetails ( ListPrice money not null, Quantity int not null, LineItemTotal as (ListPrice * Quantity))

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

You need to ensure that the minimum amount of disk space is used to store the data in the customer table. What should you do?

A) Convert all indexes to Column Store indexes.
B) Implement page-level compression.
C) Implement Unicode compression.
D) Implement row-level compression.

4. You use Microsoft SQL Server 2012 to write code for a transaction that contains several statements. There is high contention between readers and writers on several tables used by your transaction. You need to minimize the use of the tempdb space. You also need to prevent reading queries from blocking writing queries. Which isolation level should you use?

A) SERIALIZABLE
B) SNAPSHOT
C) READ COMMITTED SNAPSHOT
D) REPEATABLE READ

5. You administer a Microsoft SQL Server 2012 database that includes a table named Products. The Products table has columns named Productld, ProductName, and CreatedDateTime. The table contains a unique constraint on the combination of ProductName and CreatedDateTime. You need to modify the Products table to meet the following requirements:
Remove all duplicates of the Products table based on the ProductName column.
Retain only the newest Products row. Which Transact-SQL query should you use?

A) WITH CTEDupRecords AS (
SELECT MIN(CreatedDateTime) AS CreatedDateTime, ProductName
FROM Products
GROUP BY ProductName
)
DELETE p
FROM Products p
JOIN CTEDupRecords cte ON
p.ProductName = cte.ProductName
B) WITH CTEDupRecords AS (
SELECT MAX(CreatedDateTime) AS CreatedDateTime, ProductName
FROM Products
GROUP BY ProductName
HAVING COUNT(*) > 1
)
DELETE p
FROM Products p
JOIN CTEDupRecords cte ON
cte.ProductName = p.ProductName
AND cte.CreatedDateTime > p.CreatedDateTime
C) WITH CTEDupRecords AS (
SELECT MAX(CreatedDateTime) AS CreatedDateTime, ProductName
FROM Products
GROUP BY ProductName
HAVING COUNT(*) > 1
)
DELETE p
FROM Products p
JOIN CTEDupRecords cte ON
p.ProductName = cte.ProductName
AND p.CreatedDateTime > cte.CreatedDateTime
D) WITH CTEDupRecords AS (
SELECT MAX(CreatedDateTime) AS CreatedDateTime, ProductName
FROM Products
GROUP BY ProductName
HAVING COUNT(*) > 1
)
DELETE p
FROM Products p
JOIN CTEDupRecords cte ON
p.ProductName = cte.ProductName

Solutions: