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Microsoft Querying Microsoft SQL Server 2012 70-461
Exam Number/Code : 70-461
Exam Name : Querying Microsoft SQL Server 2012
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Questions and Answers : 88Q&As
Update Time : 2012-10-10
Price : $89.00
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QUESTION : You develop a Microsoft SQL Server 2012 server database that supports an application. The application contains a table that has the following definition:
CREATE TABLE Inventory
(ItemID int NOT NULL PRIMARY KEY,
ItemsInStore int NOT NULL,
ItemsInWarehouse int NOT NULL)
You need to create a computed column that returns the sum total of the ItemsInStore and ItemsInWarehouse values for each row. The new column is expected to be queried heavily, and you need to be able to index the column.Which Transact-SQL statement should you use?
A. ALTER TABLE Inventory
All TotalItems AS Item3lnStore + ItemsInWarehouse
B. ALTER TABLE Inventory
ADD TotalItems AS ItemsInStore + ItemsInWarehouse PERSISTED
C. ALTER TABLE Inventory
ADD TotalItems AS SUM (ItemsInStore, ItemsInWarehouse) PERSISTED
D. ALTER TABLE Inventory
All TotalItems AS SUM (ItemsInStore, ItemsInWarehouse)
QUESTION NO: You develop a Microsoft SQL Server 2012 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?
A. Convert the view into a table-valued function.
B. Convert the view into a Common Table Expression (CTE).
C. Convert the view into an indexed view.
D. Convert the view into a stored procedure and retrieve the result from the stored procedure into a temporary table.
Exam 70-461 : Querying Microsoft SQL Server 2012 Exam objectives
Work with Data (27%)
•Query data by using SELECT statements.
◦May include but not limited to: use the ranking function to select top(X) rows for multiple categories in a single query; write and perform queries efficiently using the new (SQL 2005/8->) code items such as synonyms, and joins (except, intersect); implement logic which uses dynamic SQL and system metadata; write efficient, technically complex SQL queries, including all types of joins versus the use of derived tables; determine what code may or may not execute based on the tables provided; given a table with constraints, determine which statement set would load a table; use and understand different data access technologies; case versus isnull versus coalesce
Troubleshoot & Optimize (25%)
◦May include but not limited to: understand statistics; read query plans; plan guides; DMVs; hints; statistics IO; dynamic vs. parameterized queries; describe the different join types (HASH, MERGE, LOOP) and describe the scenarios they would be used
◦May include but not limited to: mark a transaction; understand begin tran, commit, and rollback; implicit vs explicit transactions; isolation levels; scope and type of locks; trancount
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