70-762 Dumps - Microsoft New Developing SQL Databases Test Questions Pdf - Omgzlook

Why we let you try our 70-762 Dumps exam software free demo before you purchase? Why we can give you a promise that we will fully refund the money you purchased our software if you fail 70-762 Dumps exam with our dump? Because we believe that our products can make you success. As the 70-762 Dumps exam continues to update, our software will be always updating with it. Ranking the top of the similar industry, we are known worldwide by helping tens of thousands of exam candidates around the world. To illustrate our 70-762 Dumps study materials better, you can have an experimental look of them by downloading our 70-762 Dumps demos freely. PayPal is one of the biggest international security payment systems.

MCP 70-762 Your life will be even more exciting.

With all the questons and answers of our 70-762 - Developing SQL Databases Dumps study materials, your success is 100% guaranteed. Though the content of these three versions is the same, the displays have their different advantages. With our 70-762 Reliable Test Bootcamp Materials study materials, you can have different and pleasure study experience as well as pass 70-762 Reliable Test Bootcamp Materials exam easily.

We believe that you will like our products. According to the different demands from customers, the experts and professors designed three different versions for all customers. According to your need, you can choose the most suitable version of our Developing SQL Databases guide torrent for yourself.

Microsoft 70-762 Dumps - You are the best and unique in the world.

As we enter into such a competitive world, the hardest part of standing out from the crowd is that your skills are recognized then you will fit into the large and diverse workforce. The 70-762 Dumps certification is the best proof of your ability. However, it’s not easy for those work officers who has less free time to prepare such an 70-762 Dumps exam. Here comes 70-762 Dumps exam materials which contain all of the valid 70-762 Dumps study questions. You will never worry about the 70-762 Dumps exam.

In the meantime, all your legal rights will be guaranteed after buying our 70-762 Dumps study materials. For many years, we have always put our customers in top priority.

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
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.

So we never stop the pace of offering the best services and VMware 3V0-21.23 practice materials for you. Even the VMware 3V0-42.23 test syllabus is changing every year; our experts still have the ability to master the tendency of the important knowledge as they have been doing research in this career for years. Our IIA IIA-CIA-Part2-KR study materials provide a promising help for your IIA IIA-CIA-Part2-KR exam preparation whether newbie or experienced exam candidates are eager to have them. If you are preparing for the exam by the guidance of the F5 302 study practice question from our company and take it into consideration seriously, you will absolutely pass the exam and get the related certification. With our EMC D-PSC-MN-23 study guide, not only that you can pass you exam easily and smoothly, but also you can have a wonderful study experience based on the diversed versions of our EMC D-PSC-MN-23 training prep.

Updated: May 28, 2022