The software of our 70-762 Latest Exam Voucher test torrent provides the statistics report function and help the students find the weak links and deal with them. Our 70-762 Latest Exam Voucher guide torrent has gone through strict analysis and summary according to the past exam papers and the popular trend in the industry and are revised and updated according to the change of the syllabus and the latest development conditions in the theory and the practice. The 70-762 Latest Exam Voucher exam questions have simplified the sophisticated notions. We did not gain our high appraisal by our 70-762 Latest Exam Voucher real exam for nothing and there is no question that our 70-762 Latest Exam Voucher practice materials will be your perfect choice. Though it is unavoidable that you may baffle by some question points during review process, our 70-762 Latest Exam Voucher study guide owns clear analysis under some necessary questions. Our 70-762 Latest Exam Voucher exam materials embrace much knowledge and provide relevant 70-762 Latest Exam Voucher exam bank available for your reference, which matches your learning habits and produces a rich harvest of the 70-762 Latest Exam Voucher exam knowledge.
MCP 70-762 We believe that you will like our products.
As we will find that, get the test 70-762 - Developing SQL Databases Latest Exam Voucher certification, acquire the qualification of as much as possible to our employment effect is significant. In the process of using the Developing SQL Databases study question, if the user has some problems, the IT professor will 24 hours online to help users solve, the user can send email or contact us on the online platform. Of course, a lot of problems such as soft test engine appeared some faults or abnormal stating run phenomenon of our Test 70-762 Online exam question, these problems cannot be addressed by simple language, we will service a secure remote assistance for users and help users immediate effectively solve the existing problems of our Test 70-762 Online torrent prep, thus greatly enhance the user experience, beneficial to protect the user's learning resources and use digital tools, let users in a safe and healthy environment to study Test 70-762 Online exam question.
We will promptly provide feedback to you and we sincerely help you to solve the problem. Our specialists check daily to find whether there is an update on the 70-762 Latest Exam Voucher study tool. If there is an update system, we will automatically send it to you.
Microsoft 70-762 Latest Exam Voucher - You are the best and unique in the world.
As we enter into such a competitive world, the hardest part of standing out from the crowd is that your skills are recognized then you will fit into the large and diverse workforce. The 70-762 Latest Exam Voucher certification is the best proof of your ability. However, it’s not easy for those work officers who has less free time to prepare such an 70-762 Latest Exam Voucher exam. Here comes 70-762 Latest Exam Voucher exam materials which contain all of the valid 70-762 Latest Exam Voucher study questions. You will never worry about the 70-762 Latest Exam Voucher exam.
Not only we offer the best 70-762 Latest Exam Voucher training prep, but also our sincere and considerate attitude is praised by numerous of our customers. To cope with the fast growing market, we will always keep advancing and offer our clients the most refined technical expertise and excellent services about our 70-762 Latest Exam Voucher exam questions.
70-762 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
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: 3
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: 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.
Our company committed all versions of SAP C_TS4FI_2023 practice materials attached with free update service. You will come across almost all similar questions in the real EMC D-MN-OE-23 exam. So prepared to be amazed by our IBM C1000-173 learning guide! If you are preparing for the exam by the guidance of the Lpi 306-300 study practice question from our company and take it into consideration seriously, you will absolutely pass the exam and get the related certification. With our Snowflake COF-C02 study guide, not only that you can pass you exam easily and smoothly, but also you can have a wonderful study experience based on the diversed versions of our Snowflake COF-C02 training prep.
Updated: May 28, 2022