Besides, we understand you may encounter many problems such as payment or downloading 70-762 Questions Pdf practice materials and so on, contact with us, we will be there. Our employees are diligent to deal with your need and willing to do their part 24/7. They always treat customers with courtesy and respect to satisfy your need on our 70-762 Questions Pdf exam dumps. The accomplished 70-762 Questions Pdf guide exam is available in the different countries around the world and being testified over the customers around the different countries. They are valuable acquisitions to the filed. The statistical reporting function is provided to help students find weak points and deal with them.
MCP 70-762 And we have become a popular brand in this field.
According to various predispositions of exam candidates, we made three versions of our 70-762 - Developing SQL Databases Questions Pdf study materials for your reference: the PDF, Software and APP online. For many people, it’s no panic passing the 70-762 Test Review exam in a short time. Luckily enough,as a professional company in the field of 70-762 Test Review practice questions ,our products will revolutionize the issue.
We guarantee that you can pass the exam at one time even within one week based on practicing our 70-762 Questions Pdf exam materials regularly. 98 to 100 percent of former exam candidates have achieved their success by the help of our 70-762 Questions Pdf practice questions. And we have been treated as the best friend as our 70-762 Questions Pdf training guide can really help and change the condition which our loyal customers are in and give them a better future.
Microsoft 70-762 Questions Pdf - Join us and you will be one of them.
As we all know, it is difficult to prepare the 70-762 Questions Pdf exam by ourselves. Excellent guidance is indispensable. If you urgently need help, come to buy our study materials. Our company has been regarded as the most excellent online retailers of the 70-762 Questions Pdf exam question. So our assistance is the most professional and superior. You can totally rely on our study materials to pass the exam. All the key and difficult points of the 70-762 Questions Pdf exam have been summarized by our experts. They have rearranged all contents, which is convenient for your practice. Perhaps you cannot grasp all crucial parts of the 70-762 Questions Pdf study tool by yourself. You also can refer to other candidates’ review guidance, which might give you some help. Then we can offer you a variety of learning styles. Our printable 70-762 Questions Pdf real exam dumps, online engine and windows software are popular among candidates. So you will never feel bored when studying on our 70-762 Questions Pdf study tool.
To be convenient for the learners, our 70-762 Questions Pdf certification questions provide the test practice software to help the learners check their learning results at any time. Our 70-762 Questions Pdf study practice guide takes full account of the needs of the real exam and conveniences for the clients.
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
SAP C_LCNC_2406 - If you fail to pass the exam, we will give a full refund. Because the Palo Alto Networks PCNSE cram simulator from our company are very useful for you to pass the exam and get the certification. SAP C_HRHFC_2405 - A large number of buyers pouring into our website every day can prove this. Although we come across some technical questions of our Fortinet FCP_FMG_AD-7.4 learning guide during development process, we still never give up to developing our Fortinet FCP_FMG_AD-7.4 practice engine to be the best in every detail. If you want to be one of them, please take a two-minute look at our AACE International CCP real exam.
Updated: May 28, 2022