The questions of our 070-762 Most Reliable Questions guide questions are related to the latest and basic knowledge. What’s more, our 070-762 Most Reliable Questions learning materials are committed to grasp the most knowledgeable points with the fewest problems. So 20-30 hours of study is enough for you to deal with the exam. Besides, we understand you may encounter many problems such as payment or downloading 070-762 Most Reliable Questions practice materials and so on, contact with us, we will be there. Our employees are diligent to deal with your need and willing to do their part 24/7. The accomplished 070-762 Most Reliable Questions guide exam is available in the different countries around the world and being testified over the customers around the different countries.
MCP 070-762 You can consult our staff online.
In the annual examination questions, our 070-762 - Developing SQL Databases Most Reliable Questions study questions have the corresponding rules to summarize, and can accurately predict this year's test hot spot and the proposition direction. They can greatly solve your problem-solving abilities. Actually our Latest 070-762 Test Testking study materials cover all those traits and they are your prerequisites for successful future.
Highlight a person's learning effect is not enough, because it is difficult to grasp the difficulty of testing, a person cannot be effective information feedback, in order to solve this problem, our 070-762 Most Reliable Questions real exam materials provide a powerful platform for users, allow users to exchange of experience. Here, the all users of our 070-762 Most Reliable Questions learning reference files can through own id to login to the platform, realize the exchange and sharing with other users, even on the platform and more users to become good friends, encourage each other, to deal with the difficulties encountered in the process of preparation each other. Our 070-762 Most Reliable Questions learning reference files not only provide a single learning environment for users, but also create a learning atmosphere like home, where you can learn and communicate easily.
Microsoft 070-762 Most Reliable Questions - Your exam results will help you prove this!
With the most scientific content and professional materials 070-762 Most Reliable Questions preparation materials are indispensable helps for your success. Such a valuable acquisition priced reasonably of our 070-762 Most Reliable Questions study guide is offered before your eyes, you can feel assured to take good advantage of. And we give some discounts from time to time on our 070-762 Most Reliable Questions exam questions for promoting. If you come to visit our website more times, you will buy our 070-762 Most Reliable Questions practice engine at a more favorable price.
Our 070-762 Most Reliable Questions test torrent is carefully compiled by industry experts based on the examination questions and industry trends in the past few years. More importantly, we will promptly update our 070-762 Most Reliable Questions exam materials based on the changes of the times and then send it to you timely.
070-762 PDF DEMO:
QUESTION NO: 1
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: 2
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: 3
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: 4
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
QUESTION NO: 5
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.
Materials trends are not always easy to forecast on our study guide, but they have predictable pattern for them by ten-year experience who often accurately predict points of knowledge occurring in next Scrum SAFe-SASM preparation materials. Our employees are diligent to deal with your need and willing to do their part on the HP HPE0-V28 study materials. And the content of our Amazon AIF-C01 study questions is easy to understand. WGU Principles-of-Management - High accuracy and high quality are the reasons why you should choose us. Our Microsoft MS-102 training materials are your excellent choices, especially helpful for those who want to pass the exam without bountiful time and eager to get through it successfully.
Updated: May 28, 2022