Our 70-762 Simulations real exam can be downloaded for free trial before purchase, which allows you to understand our 70-762 Simulations sample questions and software usage. It will also enable you to make a decision based on your own needs and will not regret. If you encounter any problems in the process of purchasing or using 70-762 Simulations study guide you can contact our customer service by e-mail or online at any time, we will provide you with professional help. You can contact with our service, and they will give you the most professional guide. Our 70-762 Simulations study materials are the accumulation of professional knowledge worthy practicing and remembering. If you really want to pass the 70-762 Simulations exam and get the certificate, just buy our 70-762 Simulations study guide.
MCP 70-762 The reality is often cruel.
We are so proud to tell you that according to the statistics from our customers’ feedback, the pass rate among our customers who prepared for the exam with our 70-762 - Developing SQL Databases Simulations test guide have reached as high as 99%, which definitely ranks the top among our peers. Imagine, if you're using a 70-762 Reliable Test Lab Questions practice materials, always appear this or that grammar, spelling errors, such as this will not only greatly affect your mood, but also restricted your learning efficiency. Therefore, good typesetting is essential for a product, especially education products, and the 70-762 Reliable Test Lab Questions test material can avoid these risks very well.
All in all, high efficiency of 70-762 Simulations exam material is the reason for your selection. We understand our candidates have no time to waste, everyone wants an efficient learning. So we take this factor into consideration, develop the most efficient way for you to prepare for the 70-762 Simulations exam, that is the real questions and answers practice mode, firstly, it simulates the real Developing SQL Databases test environment perfectly, which offers greatly help to our customers.
Microsoft 70-762 Simulations - Our experts have taken your worries seriously.
The content system of 70-762 Simulations exam simulation is constructed by experts. After-sales service of our study materials is also provided by professionals. If you encounter some problems when using our 70-762 Simulations study materials, you can also get them at any time. After you choose 70-762 Simulations preparation questions, professional services will enable you to use it in the way that suits you best, truly making the best use of it, and bringing you the best learning results.
You can download the electronic invoice of the 70-762 Simulations study materials and reserve it. Once you have decided to purchase our 70-762 Simulations study materials, you can add it to your cart.
70-762 PDF DEMO:
QUESTION NO: 1
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: 2
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: 3
Note: This question is part of a series of questions that use the same scenario. For your convenience, the scenario is repeated in each question. Each question presents a different goal and answer choices, but the text of the scenario is exactly the same in each question in the series.
You have a database named Sales that contains the following database tables. Customer, Order, and
Products.
The Products table and the order table shown in the following diagram.
The Customer table includes a column that stores the date for the last order that the customer placed.
You plan to create a table named Leads. The Leads table is expected to contain approximately 20,000 records.
Storage requirements for the Leads table must be minimized.
You need to begin to modify the table design to adhere to third normal form.
Which column should you remove for each table? To answer? drag the appropriate column names to the correct locations. Each column name may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
Answer:
Explanation
In the Products table the SupplierName is dependent on the SupplierID, not on the ProductID.
In the Orders table the ProductName is dependent on the ProductID, not on the OrderID.
Note:
A table is in third normal form when the following conditions are met:
* It is in second normal form.
* All non-primary fields are dependent on the primary key.
Second normal form states that it should meet all the rules for First 1Normnal Form and there must be no partial dependencies of any of the columns on the primary key.
First normal form (1NF) sets the very basic rules for an organized database:
* Define the data items required, because they become the columns in a table. Place related data items in a table.
* Ensure that there are no repeating groups of data.
* Ensure that there is a primary key.
References: https://www.tutorialspoint.com/sql/third-normal-form.htm
QUESTION NO: 4
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: 5
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.
Perhaps you have doubts about this "shortest time." I believe that after you understand the professional configuration of H3C GB0-372-ENU training questions, you will agree with what I said. Palo Alto Networks PSE-SoftwareFirewall - These professional knowledge will become a springboard for your career, help you get the favor of your boss, and make your career reach it is peak. How much time do you think it takes to pass an exam? Our IBM C1000-154 learning materials can assure you that you only need to spend twenty to thirty hours to pass the exam. We can be sure that with the professional help of our SAP C-THR85-2405 test guide you will surely get a very good experience. With deeply understand of core knowledge Salesforce Nonprofit-Cloud-Consultant actual test guide, you can overcome all the difficulties in the way.
Updated: May 28, 2022