Our 70-762 Dumps Demo learning materials are new but increasingly popular choices these days which incorporate the newest information and the most professional knowledge of the practice exam. All points of questions required are compiled into our 70-762 Dumps Demo preparation quiz by experts. By the way, the 70-762 Dumps Democertificate is of great importance for your future and education. Our 70-762 Dumps Demo exam dumps are required because people want to get succeed in IT field by clearing the certification exam. Passing 70-762 Dumps Demo practice exam is not so easy and need to spend much time to prepare the training materials, that's the reason that so many people need professional advice for 70-762 Dumps Demo exam prep. If you have any questions about Developing SQL Databases test torrent or there are any problems existing in the process of the refund you can contact us by mails or contact our online customer service personnel and we will reply and solve your doubts or questions promptly.
MCP 70-762 It is so cool even to think about it.
And you are lucky to find us for we are the most popular vendor in this career and have a strong strength on providing the best 70-762 - Developing SQL Databases Dumps Demo study materials. The easy language does not pose any barrier for any learner. The complex portions of the 70-762 New Test Collection Materials certification syllabus have been explained with the help of simulations and real-life based instances.
As the old saying goes, skills will never be burden. So for us, with one more certification, we will have one more bargaining chip in the future. However, it is difficult for many people to get a 70-762 Dumps Demo certification, but we are here to offer you help.
Microsoft 70-762 Dumps Demo - Please give us a chance to prove.
We provide online customer service to the customers for 24 hours per day and we provide professional personnel to assist the client in the long distance online. If you have any questions and doubts about the Developing SQL Databases guide torrent we provide before or after the sale, you can contact us and we will send the customer service and the professional personnel to help you solve your issue about using 70-762 Dumps Demo exam materials. The client can contact us by sending mails or contact us online. We will solve your problem as quickly as we can and provide the best service. Our after-sales service is great as we can solve your problem quickly and won’t let your money be wasted. If you aren’t satisfied with our 70-762 Dumps Demo exam torrent you can return back the product and refund you in full.
As you can see, we never stop innovating new version of the 70-762 Dumps Demo study materials. We really need your strong support.
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
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
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: 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
In your every stage of review, our SAP C-ARP2P-2404 practice prep will make you satisfied. Microsoft certification Palo Alto Networks PSE-SoftwareFirewall exam can give you a lot of change. ISQI CTFL_Syll_4.0 - Need any help, please contact with us again! In order to pass Microsoft certification SAP C_THR87_2405 exam disposably, you must have a good preparation and a complete knowledge structure. Google Cloud-Digital-Leader - Our questions and answers are based on the real exam and conform to the popular trend in the industry.
Updated: May 28, 2022