We have hired professional staff to maintain 70-762 Exam Dumps Pdf practice engine and our team of experts also constantly updates and renew the question bank according to changes in the syllabus. With 70-762 Exam Dumps Pdf learning materials, you can study at ease, and we will help you solve all the problems that you may encounter in the learning process. If you have any confusion about our 70-762 Exam Dumps Pdf exam questions, just contact us and we will help you out. Our experts constantly keep the pace of the current exam requirement for 70-762 Exam Dumps Pdf actual test to ensure the accuracy of our questions. The pass rate of our 70-762 Exam Dumps Pdf exam dumps almost reach to 98% because our questions and answers always updated according to the latest exam information. As a member of the group who are about to take the 70-762 Exam Dumps Pdf exam, are you worried about the difficulties in preparing for the exam? Maybe this problem can be solved today, if you are willing to spend a few minutes to try our 70-762 Exam Dumps Pdf actual exam.
MCP 70-762 The results are accurate.
MCP 70-762 Exam Dumps Pdf - Developing SQL Databases We promise during the process of installment and payment of our Developing SQL Databases prep torrent, the security of your computer or cellphone can be guaranteed, which means that you will be not afraid of virus intrusion and personal information leakage. They are PDF version, online test engines and windows software of the Braindump 70-762 Pdf study materials. The three packages can guarantee you to pass the exam for the first time.
With many advantages such as immediate download, simulation before the real exam as well as high degree of privacy, our 70-762 Exam Dumps Pdf actual exam survives all the ordeals throughout its development and remains one of the best choices for those in preparation for 70-762 Exam Dumps Pdf exam. Many people have gained good grades after using our 70-762 Exam Dumps Pdf real dumps, so you will also enjoy the good results. Don’t hesitate any more.
Microsoft 70-762 Exam Dumps Pdf - So stop hesitation and buy our study materials.
Preparing for the 70-762 Exam Dumps Pdf real exam is easier if you can select the right test questions and be sure of the answers. The 70-762 Exam Dumps Pdf test answers are tested and approved by our certified experts and you can check the accuracy of our questions from our free demo. Expert for one-year free updating of 70-762 Exam Dumps Pdf dumps pdf, we promise you full refund if you failed exam with our dumps.
So you just need to memorize our correct questions and answers of the 70-762 Exam Dumps Pdf study materials. You absolutely can pass the exam.
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 customers can easily access and download the Microsoft MS-900 dumps pdf on many electronic devices including computer, laptop and Mac. How do you stand out? Obtaining Microsoft SC-400 certification is a very good choice. Our Microsoft AI-102 exam review contains the latest test questions and accurate answers along with the professional explanations. Let me tell the advandages of using the Microsoft SC-400 practice engine. Our experts check the updating of HP HP2-I58 free demo to ensure the accuracy of our dumps and create the pass guide based on the latest information.
Updated: May 28, 2022