Microsoft Developing SQL Databases - 70-762무료 덤프문제 풀어보기
You use Microsoft SQL Server Profile to evaluate a query named Query1. The Profiler report indicates the following issues:
- At each level of the query plan, a low total number of rows are processed.
- The query uses many operations. This results in a high overall cost for the query.
You need to identify the information that will be useful for the optimizer.
What should you do?
- At each level of the query plan, a low total number of rows are processed.
- The query uses many operations. This results in a high overall cost for the query.
You need to identify the information that will be useful for the optimizer.
What should you do?
정답: B
설명: (Fast2test 회원만 볼 수 있음)
You suspect deadlocks on a database.
Which two trace flags in the Microsoft SQL Server error log should you locate? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
Which two trace flags in the Microsoft SQL Server error log should you locate? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
정답: C,E
설명: (Fast2test 회원만 볼 수 있음)
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 need to identify the indexes that are not being used so that you can remove them from the database.
Solution: You run the sys.dm_db_index_usage_stats dynamic management view.
Does the solution meet the goal?
You need to identify the indexes that are not being used so that you can remove them from the database.
Solution: You run the sys.dm_db_index_usage_stats dynamic management view.
Does the solution meet the goal?
정답: A
설명: (Fast2test 회원만 볼 수 있음)
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some questions sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You have a database that is 130 GB and contains 500 million rows of data.
Granular transactions and mass batch data imports change the database frequently throughout the day.
Microsoft SQL Server Reporting Services (SSRS) uses the database to generate various reports by using several filters.
You discover that some reports time out before they complete.
You need to reduce the likelihood that the reports will time out.
Solution: You partition the largest tables.
Does this meet the goal?
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You have a database that is 130 GB and contains 500 million rows of data.
Granular transactions and mass batch data imports change the database frequently throughout the day.
Microsoft SQL Server Reporting Services (SSRS) uses the database to generate various reports by using several filters.
You discover that some reports time out before they complete.
You need to reduce the likelihood that the reports will time out.
Solution: You partition the largest tables.
Does this meet the goal?
정답: B
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.
You are developing a new application that uses a stored procedure. The stored procedure inserts thousands of records as a single batch into the Employees table.
Users report that the application response time has worsened since the stored procedure was updated. You examine disk-related performance counters for the Microsoft SQL Server instance and observe several high values that include a disk performance issue. You examine wait statistics and observe an unusually high WRITELOG value.
You need to improve the application response time.
Solution: You add a unique clustered index to the Employees table.
Does the solution meet the goal?
You are developing a new application that uses a stored procedure. The stored procedure inserts thousands of records as a single batch into the Employees table.
Users report that the application response time has worsened since the stored procedure was updated. You examine disk-related performance counters for the Microsoft SQL Server instance and observe several high values that include a disk performance issue. You examine wait statistics and observe an unusually high WRITELOG value.
You need to improve the application response time.
Solution: You add a unique clustered index to the Employees table.
Does the solution meet the goal?
정답: A
설명: (Fast2test 회원만 볼 수 있음)
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 this series.
You have a database named DB1 that contains the following tables: Customer, CustomerToAccountBridge, and CustomerDetails. The three tables are part of the Sales schema. The database also contains a schema named Website. You create the Customer table by running the following Transact-SQL statement:
The value of the CustomerStatus column is equal to one for active customers. The value of the Account1Status and Account2Status columns are equal to one for active accounts. The following table displays selected columns and rows from the Customer table.
You plan to create a view named Website.Customer and a view named Sales.FemaleCustomers.
Website.Customer must meet the following requirements:
* Allow users access to the CustomerName and CustomerNumber columns for active customers.
* Allow changes to the columns that the view references. Modified data must be visible through the view.
* Prevent the view from being published as part of Microsoft SQL Server replication.
Sales.Female.Customers must meet the following requirements:
* Allow users access to the CustomerName, Address, City, State and PostalCode columns.
* Prevent changes to the columns that the view references.
* Only allow updates through the views that adhere to the view filter.
You have the following stored procedures: spDeleteCustAcctRelationship and spUpdateCustomerSummary.
The spUpdateCustomerSummary stored procedure was created by running the following Transact-SQL statement:
You run the spUpdateCustomerSummary stored procedure to make changes to customer account summaries.
Other stored procedures call the spDeleteCustAcctRelationship to delete records from the CustomerToAccountBridge table.
When a procedure calls spDeleteCustAcctRelationship, if the calling stored procedures has already started an active transaction, all the detections made by the spDeleteCustAccRelationship stored procedure must be committed by the caller; otherwise changes must be committed within the spDeleteCustAcctRelationship stored procedure.
If any error occurs during the delete operation, only the deletes made by the soDeleteCustACCTRelationships stored procedure must be rolled back and the status must be updated.
You need to complete the stored procedure to ensure all the requirements are met.
How should you complete the procedure? To answer, drag the Transact-SQL segments to the correct location.
Each transact-SQL segment 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.
NOTE: Each correct selection is worth one point.
You have a database named DB1 that contains the following tables: Customer, CustomerToAccountBridge, and CustomerDetails. The three tables are part of the Sales schema. The database also contains a schema named Website. You create the Customer table by running the following Transact-SQL statement:
The value of the CustomerStatus column is equal to one for active customers. The value of the Account1Status and Account2Status columns are equal to one for active accounts. The following table displays selected columns and rows from the Customer table.
You plan to create a view named Website.Customer and a view named Sales.FemaleCustomers.
Website.Customer must meet the following requirements:
* Allow users access to the CustomerName and CustomerNumber columns for active customers.
* Allow changes to the columns that the view references. Modified data must be visible through the view.
* Prevent the view from being published as part of Microsoft SQL Server replication.
Sales.Female.Customers must meet the following requirements:
* Allow users access to the CustomerName, Address, City, State and PostalCode columns.
* Prevent changes to the columns that the view references.
* Only allow updates through the views that adhere to the view filter.
You have the following stored procedures: spDeleteCustAcctRelationship and spUpdateCustomerSummary.
The spUpdateCustomerSummary stored procedure was created by running the following Transact-SQL statement:
You run the spUpdateCustomerSummary stored procedure to make changes to customer account summaries.
Other stored procedures call the spDeleteCustAcctRelationship to delete records from the CustomerToAccountBridge table.
When a procedure calls spDeleteCustAcctRelationship, if the calling stored procedures has already started an active transaction, all the detections made by the spDeleteCustAccRelationship stored procedure must be committed by the caller; otherwise changes must be committed within the spDeleteCustAcctRelationship stored procedure.
If any error occurs during the delete operation, only the deletes made by the soDeleteCustACCTRelationships stored procedure must be rolled back and the status must be updated.
You need to complete the stored procedure to ensure all the requirements are met.
How should you complete the procedure? To answer, drag the Transact-SQL segments to the correct location.
Each transact-SQL segment 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.
NOTE: Each correct selection is worth one point.
정답:
Explanation
Savepoints offer a mechanism to roll back portions of transactions. You create a savepoint using the SAVE TRANSACTION savepoint_name statement. Later, you execute a ROLLBACK TRANSACTION savepoint_name statement to roll back to the savepoint instead of rolling back to the start of the transaction.
References: https://technet.microsoft.com/en-us/library/ms178157(v=sql.105).aspx
Note: The question is part of a series of questions that use the same or similar answer choices. An answer choice may be correct for more than one question in the series. Each question is independent of the other question in the series. Information and details provided in a question apply only to that question.
You have a database named DB1. The database does not use a memory-optimized filegroup. The database contains a table named Table1. The table must support the following workloads:
You need to add the most efficient index to support the new OLTP workload, while not deteriorating the existing Reporting query performance.
What should you do?
You have a database named DB1. The database does not use a memory-optimized filegroup. The database contains a table named Table1. The table must support the following workloads:
You need to add the most efficient index to support the new OLTP workload, while not deteriorating the existing Reporting query performance.
What should you do?
정답: D
설명: (Fast2test 회원만 볼 수 있음)
You need to build a function that meets the following requirements:
*Returns multiple rows
*Optimizes the performance of the query within the function
How should you complete the Transact-SQL statement? To answer, drag the appropriate Transact-SQL segments to the correct locations. Each Transact-SQL segment 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.
*Returns multiple rows
*Optimizes the performance of the query within the function
How should you complete the Transact-SQL statement? To answer, drag the appropriate Transact-SQL segments to the correct locations. Each Transact-SQL segment 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.
정답:
Explanation
