70-762 Latest Exam Cram Pdf study guide not only apply to students, but also apply to office workers; not only apply to veterans in the workplace, but also apply to newly recruited newcomers. 70-762 Latest Exam Cram Pdf guide torrent uses a very simple and understandable language, to ensure that all people can read and understand. Are you still feeling distressed for expensive learning materials? Are you still struggling with complicated and difficult explanations in textbooks? Do you still hesitate in numerous tutorial materials? 70-762 Latest Exam Cram Pdf study guide can help you to solve all these questions. So our 70-762 Latest Exam Cram Pdf latest dumps are highly effective to make use of. We offer free demos as your experimental tryout before downloading our real 70-762 Latest Exam Cram Pdf exam questions. Once you find it unsuitable for you, you can choose other types of the study materials.
MCP 70-762 The free demo has three versions.
Omgzlook's Microsoft 70-762 - Developing SQL Databases Latest Exam Cram Pdf exam training materials is a very good training materials. Where is a will, there is a way. And our New 70-762 Test Pass4Sure exam questions are the exact way which can help you pass the exam and get the certification with ease.
Of course, the Microsoft 70-762 Latest Exam Cram Pdf certification is a very important exam which has been certified. In addition, the exam qualification can prove that you have high skills. However, like all the exams, Microsoft 70-762 Latest Exam Cram Pdf test is also very difficult.
Microsoft 70-762 Latest Exam Cram Pdf - You can download any time before purchasing.
Omgzlook IT Certification has years of training experience. Omgzlook Microsoft 70-762 Latest Exam Cram Pdf exam training materials is a reliable product. IT elite team continue to provide our candidates with the latest version of the 70-762 Latest Exam Cram Pdf exam training materials. Our staff made great efforts to ensure that you always get good grades in examinations. To be sure, Omgzlook Microsoft 70-762 Latest Exam Cram Pdf exam materials can provide you with the most practical IT certification material.
To pass the certification exam, you need to select right 70-762 Latest Exam Cram Pdf study guide and grasp the overall knowledge points of the real exam. The test questions from our 70-762 Latest Exam Cram Pdf dumps collection cover almost content of the exam requirement and the real exam.
70-762 PDF DEMO:
QUESTION NO: 1
You are reviewing the execution plans in the query plan cache. You observe the following:
- There are a large number of single use plans.
- There are a large number of simple execution plans that use multiple CPU cores.
You need to configure the server to optimize query plan execution.
Which two setting should you modify on the properties page for the Microsoft SQL Server instance?
To answer, select the appropriate settings in the answer area.
Answer:
Explanation
* Optimize for ad hoc workloads
The optimize for ad hoc workloads option is used to improve the efficiency of the plan cache for workloads that contain many single use ad hoc batches. When this option is set to 1, the Database
Engine stores a small compiled plan stub in the plan cache when a batch is compiled for the first time, instead of the full compiled plan. This helps to relieve memory pressure by not allowing the plan cache to become filled with compiled plans that are not reused.
* Cost Threshold for Parallelism
Use the cost threshold for parallelism option to specify the threshold at which Microsoft SQL Server creates and runs parallel plans for queries. SQL Server creates and runs a parallel plan for a query only when the estimated cost to run a serial plan for the same query is higher than the value set in cost threshold for parallelism. The cost refers to an estimated elapsed time in seconds required to run the serial plan on a specific hardware configuration.
5 means 5 seconds, but is is 5 seconds on a machine internal to Microsoft from some time in the
1990s.
There's no way to relate it to execution time on your current machine, so we treat it as a pure number now.
Raising it to 50 is a common suggestion nowadays, so that more of your simpler queries run on a single thread.
QUESTION NO: 2
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution. Determine whether the solution meets the stated goals.
You have a table that has a clustered index and a nonclustered index. The indexes use different columns from the table. You have a query named Users report that Query1 takes a long time to report results. You run and review the following statistics for an index seek operation:
You need to resolve the performance issue.
Solution: You rebuild the clustered index.
Does the solution meet the goal?
A. No
B. Yes
Answer: A
Explanation
The query uses the nonclustered index, so improving the clustered index will not help.
We should update statistics for the nonclustered index.
QUESTION NO: 3
You have a reporting application that uses a table named Table1. You deploy a new batch update process to perform updates to Table1.
The environment is configured with the following properties:
* The database is configured with the default isolation setting.
* The application and process use the default transaction handling.
You observe the application cannot access any rows that are in use by the process.
You have the following requirements:
* Ensure the application is not blocked by the process.
* Ensure the application has a consistent view of the data
* Ensure the application does not read dirty data.
You need to resolve the issue and meet the requirements with the least amount of administrative effort.
What should you do?
A. Enable the database for the READ_COMITTED_SNAPSHOT isolation level.
B. Enable the database for the ALLOW_SNAPSHOT_ISOLATION isolation level. Modify the application and the update process for the SNAPSHOT isolation level.
C. Enable the database for the ALLOW_SNAPSHOT_ISOLATION isolation level. Modify the application for the SERIALIZABLE isolation level.
D. Enable the application for the WITH (NOLOCK) hint.
Answer: A
Explanation
Snapshot isolation must be enabled by setting the ALLOW_SNAPSHOT_ISOLATION ON database option before it is used in transactions. This activates the mechanism for storing row versions in the temporary database (tempdb).
READ COMMITTED is the default isolation level for SQL Server. It prevents dirty reads by specifying that statements cannot read data values that have been modified but not yet committed by other transactions. Other transactions can still modify, insert, or delete data between executions of individual statements within the current transaction, resulting in non-repeatable reads, or "phantom" data.
QUESTION NO: 4
Note: This question is part of a series of questions that present the same scenario. Each question in this series contains a unique solution. Determine whether the solution meets the stated goals.
The Account table was created by using the following Transact-SQL statement:
There are more than 1 billion records in the Account table. The Account Number column uniquely identifies each account. The ProductCode column has 100 different values. The values are evenly distributed in the table. Table statistics are refreshed and up to date.
You frequently run the following Transact-SQL SELECT statements:
You must avoid table scans when you run the queries.
You need to create one or more indexes for the table.
Solution: You run the following Transact-SQL statement:
CREATE CLUSTERED INDEX PK_Account ON Account(ProductCode);
Does the solution meet the goal?
A. No
B. Yes
Answer: A
Explanation
We need an index on the productCode column as well.
References: https://msdn.microsoft.com/en-us/library/ms190457.aspx
QUESTION NO: 5
Database users report that SELECT statements take a long time to return results. You run the following Transact-SQL statement:
You need to create one nonclustered covering index that contains all of the columns in the above table. You must minimize index key size.
Which Transact-SQL statement should you run?
A. CREATE NONCLUSTERED INDEX IX_User ON Users (UserStatus, CountryCode) INCLUDE
(UserName);
B. CREATE NONCLUSTERED INDEX IX_User ON Users (CountryCode, UserStatus, UserName);
C. CREATE NONCLUSTERED INDEX IX_User ON Users (CountryCode, UserStatus) INCLUDE
(UserName);
D. CREATE NONCLUSTERED INDEX IX_User ON Users (CountryCode, UserName);
Answer: C
Explanation
https://docs.microsoft.com/en-us/sql/relational-databases/indexes/create-indexes-with-included- columns
Omgzlook's Microsoft The Open Group OGBA-101 exam training materials is a pioneer in the Microsoft The Open Group OGBA-101 exam certification preparation. Our website offer you the latest Splunk SPLK-5001 dumps torrent in pdf version and test engine version, which selected according to your study habit. Scrum SAFe-SASM - With it, you will get a different life. Our Microsoft AZ-400 real dumps has received popular acceptance worldwide with tens of thousands of regular exam candidates who trust our proficiency. Microsoft AZ-900-KR - You get what you want is one of the manifestations of success.
Updated: May 28, 2022