You develop a Microsoft SQL Server database. You create a view that performs the following tasks:
-> Joins 8 tables that contain up to 500,000 records each.
-> Performs aggregations on 5 fields.
The view is frequently used in several reports.
You need to improve the performance of the reports.
What should you do?
Answer : C
Reference:
http://msdn.microsoft.com/en-us/library/ms191432.aspx
You are a database developer of a Microsoft SQL Server database.
The database contains a table named Customers that has the following definition:
Answer : A
Reference:
http://msdn.microsoft.com/en-us/library/ms189049.aspx
You have three tables that contain data for dentists, psychiatrists, and physicians. You create a view that is used to look up their email addresses and phone numbers.
The view has the following definition:
Answer : B
Reference:
http://msdn.microsoft.com/en-us/library/ms187956.aspx
You develop a Microsoft SQL Server database. You create a view from the Orders and OrderDetails tables by using the following definition.
Answer : C
Reference:
http://msdn.microsoft.com/en-us/library/ms187956.aspx
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 run?
Answer : A
Reference:
http://msdn.microsoft.com/en-us/library/ms177564.aspx
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?
Answer : F
Explanation:
You administer a Microsoft SQL Server database named ContosoDb. Tables are defined as shown in the exhibit. (Click the Exhibit button.)
Answer : F
Explanation:
You administer a Microsoft SQL Server database named ContosoDb. Tables are defined as shown in the exhibit. (Click the Exhibit button.)
Answer : G
Explanation:
You use Microsoft SQL Server 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?
Answer : C
Reference:
http://msdn.microsoft.com/en-us/library/ms173763.aspx
Note: This question is part of a series of questions that use the same set of answer choices. An answer choice may be correct for more than one question in the series.
You create a table that has the StudentCode, SubjectCode, and Marks columns to record mid-year marks for students. The table has marks obtained by 50 students for various subjects.
You need to ensure that the top half of the students arranged by their average marks must be given a rank of 1 and the remaining students must be given a rank of 2. Which Transact-SQL query should you use?
Answer : D
Explanation:
Note: This question is part of a series of questions that use the same set of answer choices. An answer choice may be correct for more than one question in the series.
You create a table that has the StudentCode, SubjectCode, and Marks columns to record mid-year marks for students. The table has marks obtained by 50 students for various subjects.
You need to ensure that the following requirements are met:
-> Students must be ranked based on their average marks.
-> If one or more students have the same average, the same rank must be given to these students.
-> Consecutive ranks must be skipped when the same rank is assigned.
Which Transact-SQL query should you use?
Answer : A
Reference:
http://msdn.microsoft.com/en-us/library/ms189798.aspx
You create a table that has three columns named StudentCode, SubjectCode, and Marks. The Marks column records grades for students expressed as a percentage. The table has marks obtained by 50 students for various subjects.
You need to retrieve the students who scored the highest marks for each subject along with the marks.
Which Transact-SQL query should you use?
Answer : F
Explanation:
You use a contained database named ContosoDb within a domain. You need to create a user who can log on to the ContosoDb database. You also need to ensure that you can port the database to different database servers within the domain without additional user account configurations.
Which type of user should you create?
Answer : A
Explanation:
You administer several Microsoft SQL Server database servers. Merge replication has been configured for an application that is distributed across offices throughout a wide area network (WAN). Many of the tables involved in replication use the XML and varchar (max) data types. Occasionally, merge replication fails due to timeout errors. You need to reduce the occurrence of these timeout errors. What should you do?
Answer : A
Explanation:
You administer a Microsoft SQL Server database that has Trustworthy set to On. You create a stored procedure that returns database-level information from
Dynamic Management Views. You grant User1 access to execute the stored procedure. You need to ensure that the stored procedure returns the required information when User1 executes the stored procedure. You need to achieve this goal by granting the minimum permissions required. What should you do? (Each correct answer presents a complete solution. Choose all that apply.)
Answer : DE
Explanation: