We have hired professional staff to maintain 70-762 Reliable Test Tutorial practice engine and our team of experts also constantly updates and renew the question bank according to changes in the syllabus. With 70-762 Reliable Test Tutorial learning materials, you can study at ease, and we will help you solve all the problems that you may encounter in the learning process. If you have any confusion about our 70-762 Reliable Test Tutorial exam questions, just contact us and we will help you out. Our experts constantly keep the pace of the current exam requirement for 70-762 Reliable Test Tutorial actual test to ensure the accuracy of our questions. The pass rate of our 70-762 Reliable Test Tutorial exam dumps almost reach to 98% because our questions and answers always updated according to the latest exam information. As a member of the group who are about to take the 70-762 Reliable Test Tutorial exam, are you worried about the difficulties in preparing for the exam? Maybe this problem can be solved today, if you are willing to spend a few minutes to try our 70-762 Reliable Test Tutorial actual exam.
MCP 70-762 We get first-hand information; 2.
MCP 70-762 Reliable Test Tutorial - Developing SQL Databases Perhaps you have wasted a lot of time to playing computer games. As we sell electronic files, there is no need to ship. After payment you can receive New Study 70-762 Questions Book exam review questions you purchase soon so that you can study before.
There is no doubt that the certification has become more and more important for a lot of people, especial these people who are looking for a good job, and it has been a general trend. More and more workers have to spend a lot of time on meeting the challenge of gaining the 70-762 Reliable Test Tutorial certification by sitting for an exam. It is known to us that more and more companies start to pay high attention to the 70-762 Reliable Test Tutorial certification of the candidates.
Microsoft 70-762 Reliable Test Tutorial - So stop hesitation and buy our study materials.
Preparing for the 70-762 Reliable Test Tutorial real exam is easier if you can select the right test questions and be sure of the answers. The 70-762 Reliable Test Tutorial test answers are tested and approved by our certified experts and you can check the accuracy of our questions from our free demo. Expert for one-year free updating of 70-762 Reliable Test Tutorial dumps pdf, we promise you full refund if you failed exam with our dumps.
So you just need to memorize our correct questions and answers of the 70-762 Reliable Test Tutorial study materials. You absolutely can pass the exam.
70-762 PDF DEMO:
QUESTION NO: 1
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: 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 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: 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.
Our customers can easily access and download the EMC D-PSC-MN-23 dumps pdf on many electronic devices including computer, laptop and Mac. How do you stand out? Obtaining Salesforce Salesforce-Hyperautomation-Specialist certification is a very good choice. Our Lpi 306-300 exam review contains the latest test questions and accurate answers along with the professional explanations. Our Salesforce Sales-Cloud-Consultant study materials allow you to improve your competitiveness in a short period of time. Our experts check the updating of Snowflake COF-C02 free demo to ensure the accuracy of our dumps and create the pass guide based on the latest information.
Updated: May 28, 2022