You use Microsoft SQL Server 2012 database to develop a shopping cart application. You need to rotate the unique values of the ProductName field of a tablevalued expression into multiple columns in the output.
Which Transact-SQL operator should you use?

A table named Profits stores the total profit made each year within a territory. The Profits table has columns named Territory, Year, and Profit.
You need to create a report that displays the profits made by each territory for each year and its previous year.
Which Transact-SQL query should you use?

You develop a Microsoft SQL Server 2012 database that contains a table named Products. The Products table has the following definition:
You need to create an audit record only when either the RetailPrice or WholeSalePrice column is updated.

Which Transact-SQL query should you use?

You develop a Microsoft SQL Server 2012 database that contains tables named Employee and Person.
The tables have the following definitions:

Users are able to use single INSERT statements or INSERT…SELECT statements into this view.
You need to ensure that users are able to use a single statement to insert records into both Employee and Person tables by using the VwEmployee view.
Which Transact-SQL statement should you use?

You have three tables that contain data for vendors, customers, and agents. You create a view that is used to look up telephone numbers for these companies.
The view has the following definition:

You need to ensure that users can update only the phone numbers by using this view.
What should you do?

You are a database developer of a Microsoft SQL Server 2012 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.

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?

You develop a database for a travel application. You need to design tables and other database objects.
You create a view that displays the dates and times of the airline schedules on a report.
You need to display dates and times in several international formats.
What should you do?

You develop a database for a travel application. You need to design tables and other database objects.
You need to store media files in several tables.
Each media file is less than 1 MB in size. The media files will require fast access and will be retrieved frequently.
What should you do?

Your database contains a table named Purchases. The table includes a DATETIME column named PurchaseTime that stores the date and time each purchase is
made. There is a non- clustered index on the PurchaseTime column.
The business team wants a report that displays the total number of purchases made on the current day.
You need to write a query that will return the correct results in the most efficient manner.
Which Transact-SQL query should you use?

You use a Microsoft SQL Server 2012 database that contains two tables named SalesOrderHeader and SalesOrderDetail. The indexes on the tables are as shown
in the exhibit.
(Click the Exhibit button.)

You write the following Transact-SQL query:

You discover that the performance of the query is slow. Analysis of the query plan shows table scans where the estimated rows do not match the actual rows for
SalesOrderHeader by using an unexpected index on SalesOrderDetail.

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