MCSA SQL Server 2012/2014. A Success Guide to Prepare- Querying Microsoft SQL Server 2012/2014. edusum.com

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1 MCSA SQL Server 2012/2014 A Success Guide to Prepare- Querying Microsoft SQL Server 2012/2014 edusum.com

2 Table of Contents Introduction to Exam on Querying Microsoft SQL Server 2012/ Microsoft Certification Details:... 2 Microsoft Exam Syllabus: Sample Questions:... 5 Answers to Exam Questions: Querying Microsoft SQL Server 2012/2014 pg. 1

3 Introduction to Exam on Querying Microsoft SQL Server 2012/2014 Use this quick start guide to collect all the information about Querying Microsoft SQL Server 2012/2014 (70-461) Certification exam. This study guide provides a list of objectives and resources that will help you prepare for items on the Querying Microsoft SQL Server 2012/2014 exam. The Sample Questions will help you identify the type and difficulty level of the questions and the Practice Exams will make you familiar with the format and environment of an exam. You should refer this guide carefully before attempting your actual Microsoft MCSA SQL Server 2012/2014 certification exam. The Querying Microsoft SQL Server 2012/2014 certification is mainly targeted to those candidates who want to build their career in Microsoft SQL Server domain. The Microsoft Certified Solutions Associate (MCSA) - SQL Server 2012/2014 exam verifies that the candidate possesses the fundamental knowledge and proven skills in the area of Microsoft MCSA SQL Server 2012/2014. Microsoft Certification Details: Exam Name Exam Code Microsoft Certified Solutions Associate (MCSA) - SQL Server 2012/2014 Exam Price $165 (USD) Duration 120 min Number of Questions Passing Score 700 / 1000 Books / Training 20461C: Querying Microsoft SQL Server Schedule Exam Sample Questions Practice Exam Pearson VUE Querying Microsoft SQL Server 2012/2014 Sample Questions Microsoft Certification Practice Exam Querying Microsoft SQL Server 2012/2014 pg. 2

4 Microsoft Exam Syllabus: Topic Details Weights Create and alter tables using T-SQL syntax (simple statements) - Create tables without using the built in tools; ALTER; DROP; ALTER COLUMN; CREATE Create and alter views (simple statements) - Create indexed views; create views without using the built in tools; CREATE, ALTER, DROP Create database objects Design views - Ensure code non regression by keeping consistent signature for procedure, views and function (interfaces); security implications 20 25% Create and modify constraints (simple statements) - Create constraints on tables; define constraints; unique constraints; default constraints; primary and foreign key constraints Create and alter DML triggers - Inserted and deleted tables; nested triggers; types of triggers; update functions; handle multiple rows in a session; performance implications of triggers Work with data Query data by using SELECT statements - 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 25 30% Implement sub-queries - Identify problematic elements in query plans; Querying Microsoft SQL Server 2012/2014 pg. 3

5 Topic Details Weights pivot and unpivot; apply operator; cte statement; with statement Implement data types - Use appropriate data; understand the uses and limitations of each data type; impact of GUID (newid, newsequentialid) on database performance, when to use what data type for columns Implement aggregate queries - New analytic functions; grouping sets; spatial aggregates; apply ranking functions Query and manage XML data - Understand XML datatypes and their schemas and interop w/, limitations and restrictions; implement XML schemas and handling of XML data; XML data: how to handle it in SQL Server and when and when not to use it, including XML namespaces; import and export XML; XML indexing Create and alter stored procedures (simple statements) - Write a stored procedure to meet a given set of requirements; branching logic; create stored procedures and other programmatic objects; techniques for developing stored procedures; different types of storeproc result; create stored procedure for data access layer; program stored procedures, triggers, functions with T-SQ Modify data Modify data by using INSERT, UPDATE, and DELETE statements - Given a set of code with defaults, constraints, and triggers, determine the output of a set of DDL; know which SQL statements are best to solve common requirements; use output statement Combine datasets - Difference between UNION and UNION all; case versus isnull versus coalesce; modify data by using MERGE statements 20 25% Work with functions - Understand deterministic, non-deterministic functions; scalar and table values; apply built-in Querying Microsoft SQL Server 2012/2014 pg. 4

6 Topic Details Weights scalar functions; create and alter user-defined functions (UDFs) Optimize queries - 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 in Troubleshoot and optimize Manage transactions - Mark a transaction; understand begin tran, commit, and rollback; implicit vs explicit transactions; isolation levels; scope and type of locks; trancount Evaluate the use of row-based operations vs. setbased operations - When to use cursors; impact of scalar UDFs; combine multiple DML operations Implement error handling - Implement try/catch/throw; use set based rather than row based logic; transaction management 25 30% Sample Questions: 01. You have a vendor application that uses a scalar function. You discover that the queries for the application run slower than expected. You need to gather the runtime information of the scalar function. What are two possible ways to achieve this goal? Each correct answer presents a complete solution. a) Enable the Include Actual Execution Plan option. b) Enable the Display Estimated Execution Plan option. c) Create and then enable a profiler trace. d) Create and then enable an extended events trace. e) Run the Database Engine Tuning Advisor Querying Microsoft SQL Server 2012/2014 pg. 5

7 02. You create a stored procedure named sp_logic that applies business logic to generate records in a table. Other developers create stored procedures that call sp_logic when they run. You are planning to modify the parameter list for sp_logic. You need to identify the stored procedures that will be impacted by the change. Which two objects can you use? a) sys.sql_modules b) sys.dm_sql_referencing_entities c) sys.dm_sql_referenced_entities d) sp_helptext e) sys.sql_expression_dependencies 03. You develop a Microsoft SQL Server 2012 database. You need to create a batch process that meets the following requirements: Status information must be logged to a status table. If the status table does not exist at the beginning of the batch, it must be created. Which object should you use? a) Scalar user-defined function b) lnline user-defined function c) Table-valued user-defined function d) Stored procedure 04. 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? a) SELECT Territory, Year, Profit, LEAD(Profit, 1, 0) OVER (PARTITION BY Territory ORDER BY Year) AS PrevProfit FROM Profits b) SELECT Territory, Year, Profit, LAG(Profit, 1, 0) OVER (PARTITION BY Year ORDER BY Territory) AS PrevProfit FROM Profits c) SELECT Territory, Year, Profit, LAG(Profit, 1, 0) OVER (PARTITION BY Territory ORDER BY Year) AS PrevProfit FROM Profits d) SELECT Territory, Year, Profit, LEAD(Profit, 1, 0) OVER (PARTITION BY Year ORDER BY Territory) AS PrevProfit FROM Profits 05. You have several SQL Server queries. You plan to optimize the queries to improve performance. You run the queries in SQL Server Management Studio. You need to compare query runs to expose the indexing issues of the queries. Which three actions should you perform from SQL Server Management Studio? Each correct answer presents part of the solution. a) Enable the Debug option. b) Add the STATISTICS TIME execution setting to the query. c) Add the STATISTICS 10 execution setting to the query. d) Add the STATISTICS PROFILE execution setting to the query. e) Enable the Include Actual Execution Plan option Querying Microsoft SQL Server 2012/2014 pg. 6

8 06. You are developing a database that will contain price information. You need to store the prices that include a fixed precision and a scale of six digits. Which data type should you use? a) Float b) Money c) Smallmoney d) Decimal 07. You develop three Microsoft SQL Server 2012 databases named Database1, Database2, and Database3. You have permissions on both Database1 and Database2. You plan to write and deploy a stored procedure named dbo.usp_lnsertevent in Database3. dbo.usp_lnsertevent must execute other stored procedures in the other databases. You need to ensure that callers that do not have permissions on Databasel or Database2 can execute the stored procedure. Which Transact-SQL statement should you use? a) USE Database2 b) EXECUTE AS OWNER c) USE Database1 d) EXECUTE AS CALLER 08. You are writing a set of queries against a FILESTREAM-enabled database. You create a stored procedure that will update multiple tables within a transaction. You need to ensure that if the stored procedure raises a runtime error, the entire transaction is terminated and rolled back. Which Transact- SQL statement should you include at the beginning of the stored procedure? a) SET TRANSACTION ISOLATION LEVEL SERIALIZABLE b) SET XACT_ABORT OFF c) SET TRANSACTION ISOLATION LEVEL SNAPSHOT d) SET IMPLICIT_TRANSACTIONS ON e) SET XACT_ABORT ON f) SET IMPLICIT TRANSACTIONS OFF 09. 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 table-valued expression into multiple columns in the output. Which Transact- SQL operator should you use? a) CROSS JOIN b) CROSS APPLY c) PIVOT d) UNPIVOT Querying Microsoft SQL Server 2012/2014 pg. 7

9 10. Your application contains a stored procedure for each country. Each stored procedure accepts an employee identification number through parameter. You need to build a single process for each employee that will execute the appropriate stored procedure based on the country of residence. Which approach should you use? a) A SELECT statement that includes CASE b) Cursor c) BULK INSERT d) View e) A user-defined function Answers to Exam Questions: Question: 01 Answer: a, d Question: 06 Answer: d Question: 02 Answer: b, e Question: 07 Answer: b Question: 03 Answer: d Question: 08 Answer: e Question: 04 Answer: c Question: 09 Answer: c Question: 05 Answer: b, c, e Question: 10 Answer: e Note: If you find any typo or data entry error in these sample questions, we request you to update us by commenting on this page or write an on feedback@edusum.com Querying Microsoft SQL Server 2012/2014 pg. 8