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?

You administer a Microsoft SQL Server 2012 database named ContosoDb. Tables are defined as shown in the exhibit. (Click the Exhibit button.)

You need to display rows from the Orders table for the Customers row having the Customerld value set to 1 in the following XML format.

Which Transact-SQL query should you use?

You administer a Microsoft SQL Server 2012 database named ContosoDb. Tables are defined as shown in the exhibit. (Click the Exhibit button.)

You need to display rows from the Orders table for the Customers row having the CustomerId value set to 1 in the following XML format.

Which Transact-SQL query should you use?

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

Your investigation shows the root cause is a query against a read-only table that has a clustered index.
The query returns the following six columns:
One column in its WHERE clause contained in a non-clustered index
Four additional columns
One COUNT (*) column based on a grouping of the four additional columns
You need to optimize the statement.
What should you do?

Your database contains tables named Products and ProductsPriceLog. The Products table contains columns named ProductCode and Price. The ProductsPriceLog
table contains columns named ProductCode, OldPrice, and NewPrice.
The ProductsPriceLog table stores the previous price in the OldPrice column and the new price in the NewPrice column.
You need to increase the values in the Price column of all products in the Products table by 5 percent. You also need to log the changes to the ProductsPriceLog
table.
Which Transact-SQL query should you use?

You develop a Microsoft SQL Server 2012 database. You create a view from the Orders and OrderDetails tables by using the following definition.

You need to ensure that users are able to modify data by using the view.
What should you do?