So 70-762 Exam Testking practice materials come within the scope of our business activities. Choose our 70-762 Exam Testking learning guide, you won't regret! Having been handling in this line for more than ten years, we can assure you that our 70-762 Exam Testking study questions are of best quality and reasonable prices for your information. You can totally rely on us! We never concoct any praise but show our capacity by the efficiency and profession of our 70-762 Exam Testking practice materials. 70-762 Exam Testking study engine is very attentive to provide a demo for all customers who concerned about our products, whose purpose is to allow customers to understand our product content before purchase.
MCP 70-762 So customer orientation is the beliefs we honor.
MCP 70-762 Exam Testking - Developing SQL Databases Our products’ contents cover the entire syllabus of the exam and refer to the past years’ exam papers. Besides, the pass rate of our New 70-762 Test Voucher exam questions are unparalled high as 98% to 100%, you will get success easily with our help. There are so many features to show that our New 70-762 Test Voucher study guide surpasses others.
If you want to get the related certification in an efficient method, please choose the 70-762 Exam Testking learning dumps from our company. We can guarantee that the study materials from our company will help you pass the exam and get the certification in a relaxed and efficient method. More and more people look forward to getting the 70-762 Exam Testking certification by taking an exam.
Microsoft 70-762 Exam Testking - We can receive numerous warm feedbacks every day.
Our 70-762 Exam Testking exam quiz is unlike other exam materials that are available on the market, our 70-762 Exam Testking study dumps specially proposed different versions to allow you to learn not only on paper, but also to use mobile phones to learn. This greatly improves the students' availability of fragmented time. So you can achieve your 70-762 Exam Testking certification easily without disrupting your daily routine. And we will give you 100% success guaranteed on the 70-762 Exam Testking training guide.
When you want to correct the answer after you finish learning, the correct answer for our 70-762 Exam Testking test prep is below each question, and you can correct it based on the answer. In addition, we design small buttons, which can also show or hide the 70-762 Exam Testking exam torrent, and you can flexibly and freely choose these two modes according to your habit.
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
SAP C_ARP2P_2404 - Once you choose our learning materials, your dream that you have always been eager to get Microsoft certification which can prove your abilities will realized. HP HPE7-M01 - Everybody knows that in every area, timing counts importantly. Our EMC D-PST-MN-A-24 exam questions are your best choice. Our Cisco 200-301-KR exam questions have been widely acclaimed among our customers, and the good reputation in industry prove that choosing our study materials would be the best way for you, and help you gain the Cisco 200-301-KR certification successfully. And our professional EMC D-ECS-DY-23 study materials determine the high pass rate.
Updated: May 28, 2022