The best part of 70-762 Test Sims exam dumps are their relevance, comprehensiveness and precision. You need not to try any other source for70-762 Test Sims exam preparation. The innovatively crafted dumps will serve you the best; imparting you information in fewer number of questions and answers. We have helped tens of thousands of our customers achieve their certification with our excellent 70-762 Test Sims exam braindumps. You can see the recruitment on the Internet, and the requirements for 70-762 Test Sims certification are getting higher and higher. You will be much awarded with our 70-762 Test Sims learning engine.
You final purpose is to get the 70-762 Test Sims certificate.
Our high-quality 70-762 - Developing SQL Databases Test Sims} learning guide help the students know how to choose suitable for their own learning method, our 70-762 - Developing SQL Databases Test Sims study materials are a very good option. More importantly, it is evident to all that the Valid 70-762 Exam Syllabus training materials from our company have a high quality, and we can make sure that the quality of our products will be higher than other study materials in the market. If you want to pass the Valid 70-762 Exam Syllabus exam and get the related certification in the shortest time, choosing the Valid 70-762 Exam Syllabus training materials from our company will be in the best interests of all people.
All the preparation material reflects latest updates in 70-762 Test Sims certification exam pattern. You may now download the 70-762 Test Sims PDF documents in your smart devices and lug it along with you. You can effortlessly yield the printouts of 70-762 Test Sims exam study material as well, PDF files make it extremely simple for you to switch to any topics with a click.
Microsoft 70-762 Test Sims - It is never too late to learn new things.
We know making progress and getting the certificate of 70-762 Test Sims study materials will be a matter of course with the most professional experts in command of the newest and the most accurate knowledge in it. Our Developing SQL Databases exam prep has taken up a large part of market. with decided quality to judge from customers' perspective, If you choose the right 70-762 Test Sims practice braindumps, it will be a wise decision. Our behavior has been strictly ethical and responsible to you, which is trust worthy.
Our 70-762 Test Sims study materials must appear at the top of your list. And our 70-762 Test Sims learning quiz has a 99% pass rate.
70-762 PDF DEMO:
QUESTION NO: 1
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: 2
You create tables by using the following Transact-SQL statements:
Each customer may have multiple addresses but only one is the primary address.
You must plan a solution that meets the following requirements:
* Return both customers and address information.
* Return only the primary address of the customer.
* Allow updates of all customer information and address details with the exception of the identity columns and the IsActive column.
Which three actions should you perform is sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.
Answer:
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
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: 5
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
EMC D-XTR-OE-A-24 - The Omgzlook’ Microsoft Testing Engine provides an expert help and it is an exclusive offer for those who spend most of their time in searching relevant content in the books. Microsoft MB-220 - In comparison with similar educational products, our training materials are of superior quality and reasonable price, so our company has become the top enterprise in the international market. So we have the courage and justification to declare the number one position in this area, and choosing VMware 2V0-31.24 actual exam is choosing success. The most important thing is that the ServiceNow CIS-SP exam questions are continuously polished to be sold, so that users can enjoy the best service that our products bring. IBM C1000-178 - They check the update every day, and we can guarantee that you can get a free update service from the date of purchase.
Updated: May 28, 2022