What are you waiting for? Opportunity knocks but once. You can get Microsoft 70-762 Braindumps Sheet complete as long as you enter Omgzlook website. You find the best 70-762 Braindumps Sheet exam training materials, with our exam questions and answers, you will pass the exam. At the same time, the prices of our 70-762 Braindumps Sheet practice materials are quite reasonable for no matter the staffs or the students to afford. What is more, usually we will give some discounts to our worthy customers. Our team of IT experts is the most experienced and qualified.
MCP 70-762 Omgzlook is a great resource site.
To understand our 70-762 - Developing SQL Databases Braindumps Sheet learning questions in detail, just come and try! Each IT person is working hard for promotion and salary increases. It is also a reflection of the pressure of modern society.
Many people want to be the competent people which can excel in the job in some area and be skillful in applying the knowledge to the practical working in some industry. But the thing is not so easy for them they need many efforts to achieve their goals. Passing the test 70-762 Braindumps Sheet certification can make them become that kind of people and if you are one of them buying our 70-762 Braindumps Sheet study materials will help you pass the 70-762 Braindumps Sheet test smoothly with few efforts needed.
Microsoft 70-762 Braindumps Sheet - You can totally relay on us.
Quality should be tested by time and quantity, which is also the guarantee that we give you to provide 70-762 Braindumps Sheet exam software for you. Continuous update of the exam questions, and professional analysis from our professional team have become the key for most candidates to pass 70-762 Braindumps Sheet exam. The promise of "no help, full refund" is the motivation of our team. We will continue improving 70-762 Braindumps Sheet exam study materials. We will guarantee that you you can share the latest 70-762 Braindumps Sheet exam study materials free during one year after your payment.
Second, it is convenient for you to read and make notes with our versions of 70-762 Braindumps Sheet exam materials. Last but not least, we will provide considerate on line after sale service for you in twenty four hours a day, seven days a week.
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
Network Appliance NS0-701 - Now you can have these precious materials. After nearly ten years' efforts, now our company have become the topnotch one in the field, therefore, if you want to pass the SASInstitute A00-420 exam as well as getting the related certification at a great ease, I strongly believe that the SASInstitute A00-420 study materials compiled by our company is your solid choice. If you want to be familiar with the real test and grasp the rhythm in the real test, you can choose our EMC D-PM-MN-23 exam test engine to practice. It is universally accepted that in this competitive society in order to get a good job we have no choice but to improve our own capacity and explore our potential constantly, and try our best to get the related Cisco 300-815 certification is the best way to show our professional ability, however, the Cisco 300-815 exam is hard nut to crack but our Cisco 300-815 preparation questions are closely related to the exam, it is designed for you to systematize all of the key points needed for the Cisco 300-815 exam. Now, let’s start your preparation with Microsoft AZ-400 training material.
Updated: May 28, 2022