If you want to get the related certification in an efficient method, please choose the 70-762 Free learning dumps from our company. We can guarantee that the study materials from our company will help you pass the exam and get the certification in a relaxed and efficient method. More and more people look forward to getting the 70-762 Free certification by taking an exam. This is hard to find and compare with in the market. And numerous enthusiastic feedbacks from our worthy clients give high praises not only on our 70-762 Free study guide, but also on our sincere and helpful 24 hours customer services online. Our company has successfully created ourselves famous brands in the past years, and more importantly, all of the 70-762 Free exam braindumps from our company have been authenticated by the international authoritative institutes and cater for the demands of all customers at the same time.
Our 70-762 Free exam questions are your best choice.
Our 70-762 - Developing SQL Databases Free exam questions have been widely acclaimed among our customers, and the good reputation in industry prove that choosing our study materials would be the best way for you, and help you gain the 70-762 - Developing SQL Databases Free certification successfully. Our New 70-762 Test Fee learning questions engage our working staff in understanding customers’ diverse and evolving expectations and incorporate that understanding into our strategies, thus you can 100% trust our New 70-762 Test Fee exam engine. And our professional New 70-762 Test Fee study materials determine the high pass rate.
The content of our 70-762 Free practice engine is based on real exam by whittling down superfluous knowledge without delinquent mistakes rather than dropping out of reality. Being subjected to harsh tests of market, our 70-762 Free exam questions are highly the manifestation of responsibility carrying out the tenets of customer oriented. And our 70-762 Free study materials are warmly praised and welcomed by the customers all over the world.
Microsoft 70-762 Free - Our company is rated as outstanding enterprise.
Our experts are researchers who have been engaged in professional qualification 70-762 Free exams for many years and they have a keen sense of smell in the direction of the examination. Therefore, with our 70-762 Free study materials, you can easily find the key content of the exam and review it in a targeted manner so that you can successfully pass the 70-762 Free exam. We have free demos of the 70-762 Free exam materials that you can try before payment.
So people are different from the past. Learning has become popular among different age groups.
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
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: 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
Our service staff will help you solve the problem about the Amazon AI1-C01 training materials with the most professional knowledge and enthusiasm. Therefore, our Dell D-AX-RH-A-00 study materials are attributive to high-efficient learning. First of all, if you are not sure about the EMC D-DS-OP-23 exam, the online service will find the most accurate and all-sided information for you, so that you can know what is going on about all about the exam and make your decision to buy EMC D-DS-OP-23 study guide or not. Omgzlook's experienced IT experts through their extensive experience and professional IT expertise have come up with IT certification exam study materials to help people pass Microsoft Certification SailPoint IdentityIQ-Engineer exam successfully. Oracle 1z0-915-1 - During the clients use our products they can contact our online customer service staff to consult the problems about our products.
Updated: May 28, 2022