Developing SQL Databases (70-762) Free Practice Test

Question 1

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 replace the stored procedure with a user-defined function.
Does the solution meet the goal?

A. No

B. Yes

Correct Answer: A

Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

Question 2

You are experiencing performance issues with the database server.
You need to evaluate schema locking issues, plan cache memory pressure points, and backup I/O problems.
What should you create?

A. an Extended Events session that uses Query Editor

B. a System Monitor report

C. an Activity Monitor session in Microsoft SQL Management Studio.

D. a sys.dm_tran_database_transaction dynamic management view query

Correct Answer: C

Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

Question 3

Note: This 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 questions in this series. Information and details provided in a question apply only to that question.
You have a Microsoft SQL Server database named DB1 that contains the tables described in the following table:

There are no foreign key relationships between TBL1 and TBL2.
You need to minimize the amount of time required for queries that use data from TBL1 and TBL2 to return data.
What should you do?

A. Create clustered indexes on TBL1 and TBL2.

B. Drop existing indexes on TBL1 and then create a clustered columnstore index. Create a nonclustered columnstore index on TBL1. Create noncluster index on TBL2.

C. Create a nonclustered index on tbl2 only.

D. Create a clustered index on TBL1. Create a nonclustered index on TBL2 and add the most frequently queried columns as included columns.

E. Drop existing indexes on TBL1 and then create a clustered columnstore index. Create a nonclustered columnstore index on TBL1 Make no changes to TBL2.

F. Create unique constraints on both TBL1 and TBL2.Create a partitioned view that combines columns from TBL1 and TBL2.

Correct Answer: D

Question 4

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 need to collect data from the following two sources:
* The performance counters of the operating system
* Microsoft SQL Server events
You must analyze the two datasets side-by side by using a single tool.
Solution: You use SQL Server Profiler and SQL Server Extended Events to collect performance data. You use SQL Server Profiler to analyze the data.
Does this meet the goal?

A. No

B. Yes

Correct Answer: A

Question 5

You need to collect data from the following two sources:
* The performance counters of the operating system
* Microsoft SQL Server events
You must analyze the two datasets side-by-side by using a single tool.
Solution: You use dynamic management views and Data Collector Sets (DCSs) in Performance Monitor to collect performance data. You use SQL Server Management Studio (SSMS) to analyze the data.
Does this meet the goal?

A. No

B. Yes

Correct Answer: A

Question 6

Note: this 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 questions in the series. Information and details provided in a question apply only to that question.
You are developing and application to track customer sales.
You need to return the sum of orders that have been finalized, given a specified order identifier. This value will be used in other Transact-SQL statements.
You need to create a database object.
What should you create?

A. CLR procedure

B. scalar-valued function

C. DML trigger

D. extended procedure

E. user-defined procedure

F. table-valued function

Correct Answer: B

Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

Question 7

You have a data warehouse fact table that has a clustered columnstore index.
You have multiple CSV files that contain a total of 3 million rows of data.
You need to upload the data to the fact table. The solution must avoid the delta group when you import the data.
Which solution will achieve the goal in the least amount of time?

A. Load the source data to a staging table. Load the data to the fact table by using the insert_select statement and specify the Tablock option on the staging table.

B. Load the source data to the fact table by using the bulk insert statement and specify the Tablock option.

C. Load the source data to a staging table that has a clustered index on the primary key. Copy the data to the fact table by using the insert_select statement.

D. Load the source data to the fact table by running bcp.exe and specify the _ Tablock option.

Correct Answer: C

Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

Question 8

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 database that contains a table named Employees. The table stores information about the employees of your company.
You need to implement the following auditing rules for the Employees table:
- Record any changes that are made to the data in the Employees table.
- Customize the data recorded by the audit operations.
Solution: You implement a check constraint on the Employees table.
Does the solution meet the goal?

A. No

B. Yes

Correct Answer: A

Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

Question 9

Note: This 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 questions in this series. Information and details provided in a question apply only to that question.
You have a Microsoft SQL Server database named DB1 that contains the tables described in the following table:

There are no foreign key relationships between TBL1 and TBL2.
You need to minimize the amount of time required for queries that use data from TBL1 and TBL2 to return data.
What should you do?

A. Create clustered indexes on TBL1 and TBL2.

B. Drop existing indexes on TBL1 and then create a clustered columnstore index. Create a nonclustered columnstore index on TBL1. Create noncluster index on TBL2.

C. Create a nonclustered index on tbl2 only.

D. Create a clustered index on TBL1. Create a nonclustered index on TBL2 and add the most frequently queried columns as included columns.

E. Drop existing indexes on TBL1 and then create a clustered columnstore index. Create a nonclustered columnstore index on TBL1 Make no changes to TBL2.

F. Create unique constraints on both TBL1 and TBL2.Create a partitioned view that combines columns from TBL1 and TBL2.

Correct Answer: D

Question 10

Note: this 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 questions in the series. Information and details provided in a question apply only to that question.
You are developing an application to track customer sales.
You need to create a database object that meets the following requirements:
- Launch when table data is modified.
- Evaluate the state a table before and after a data modification and take action based on the difference.
- Prevent malicious or incorrect table data operations.
- Prevent changes that violate referential integrity by cancelling the attempted data modification.
- Run managed code packaged in an assembly that is created in the Microsoft.NET Framework and located into Microsoft SQL Server.
What should you create?

A. CLR procedure

B. scalar-valued function

C. DML trigger

D. extended procedure

E. user-defined procedure

F. table-valued function

Correct Answer: A

Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

Question 11

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 that contains the following tables: BlogCategory, BlogEntry, ProductReview, Product, and SalesPerson. The tables were created using the following Transact SQL statements:

You must modify the ProductReview Table to meet the following requirements:
* The table must reference the ProductID column in the Product table
* Existing records in the ProductReview table must not be validated with the Product table.
* Deleting records in the Product table must not be allowed if records are referenced by the ProductReview table.
* Changes to records in the Product table must propagate to the ProductReview table.
You also have the following database tables: Order, ProductTypes, and SalesHistory, The transact-SQL statements for these tables are not available.
You must modify the Orders table to meet the following requirements:
* Create new rows in the table without granting INSERT permissions to the table.
* Notify the sales person who places an order whether or not the order was completed.
You must add the following constraints to the SalesHistory table:
* a constraint on the SaleID column that allows the field to be used as a record identifier
* a constant that uses the ProductID column to reference the Product column of the ProductTypes table
* a constraint on the CategoryID column that allows one row with a null value in the column
* a constraint that limits the SalePrice column to values greater than four Finance department users must be able to retrieve data from the SalesHistory table for sales persons where the value of the SalesYTD column is above a certain threshold.
You plan to create a memory-optimized table named SalesOrder. The table must meet the following requirements:
* The table must hold 10 million unique sales orders.
* The table must use checkpoints to minimize I/O operations and must not use transaction logging.
* Data loss is acceptable.
Performance for queries against the SalesOrder table that use Where clauses with exact equality operations must be optimized.
You need to create a stored procedure named spDeleteCategory to delete records in the database. The stored procedure must meet the following requirements:
* Delete records in both the BlogEntry and BlogCategory tables where CategoryId equals parameter
@CategoryId.
* Avoid locking the entire table when deleting records from the BlogCategory table.
* If an error occurs during a delete operation on either table, all changes must be rolled back, otherwise all changes should be committed.
How should you complete the procedure? To answer, select the appropriate Transact-SQL segments in the answer area.

Correct Answer:

Explanation
Box 1: set implict_transactions on
Box 2: ROWLOCK
Requirement: Avoid locking the entire table when deleting records from the BlogCategory table ROWLOCK specifies that row locks are taken when page or table locks are ordinarily taken. When specified in transactions operating at the SNAPSHOT isolation level, row locks are not taken unless ROWLOCK is combined with other table hints that require locks, such as UPDLOCK and HOLDLOCK.
Box 3: COMMIT
Box 4: ROLLBACK

Question 12

Note: This 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 independent of the other questions in this series. Information and details provided in a question apply only to that question.
You are a database developer for a company. The company has a server that has multiple physical disks. The disks are not part of a RAID array. The server hosts three Microsoft SQL Server instances. There are many SQL jobs that run during off-peak hours.
You must monitor the SQL Server instances in real time and optimize the server to maximize throughput, response time, and overall SQL performance.
What should you do?

A. Create a sys.dm_exec_sessions query.

B. Create a SQL Profiler trace.

C. Create a sys.dm_os_memory_objects query.

D. Create asys.dm_os_waiting_tasks query.

E. Create a sp_configure 'max server memory' query.

F. Create aPerformance Monitor Data Collector Set.

G. Create an Extended Event.

H. Create a sys.dm_os_wait_stats query.

Correct Answer: A

Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

Question 13

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 that contains the following tables: BlogCategory, BlogEntry, ProductReview, Product, and SalesPerson. The tables were created using the following Transact SQL statements:

You must modify the ProductReview Table to meet the following requirements:
* The table must reference the ProductID column in the Product table
* Existing records in the ProductReview table must not be validated with the Product table.
* Deleting records in the Product table must not be allowed if records are referenced by the ProductReview table.
* Changes to records in the Product table must propagate to the ProductReview table.
You also have the following database tables: Order, ProductTypes, and SalesHistory, The transact-SQL statements for these tables are not available.
You must modify the Orders table to meet the following requirements:
* Create new rows in the table without granting INSERT permissions to the table.
* Notify the sales person who places an order whether or not the order was completed.
You must add the following constraints to the SalesHistory table:
* a constraint on the SaleID column that allows the field to be used as a record identifier
* a constant that uses the ProductID column to reference the Product column of the ProductTypes table
* a constraint on the CategoryID column that allows one row with a null value in the column
* a constraint that limits the SalePrice column to values greater than four Finance department users must be able to retrieve data from the SalesHistory table for sales persons where the value of the SalesYTD column is above a certain threshold.
You plan to create a memory-optimized table named SalesOrder. The table must meet the following requirements:
* The table must hold 10 million unique sales orders.
* The table must use checkpoints to minimize I/O operations and must not use transaction logging.
* Data loss is acceptable.
Performance for queries against the SalesOrder table that use Where clauses with exact equality operations must be optimized.
You need to enable referential integrity for the ProductReview table.
How should you complete the relevant Transact-SQL statement? To answer? select the appropriate Transact-SQL segments in the answer area.
Select two alternatives.

A. For the second selection select: ON DELETE CASCADE ON UPDATE CASCADE

B. For the second selection select: ON DELETE NO ACTION ON UPDATE CASCADE

C. For the first selection select: WITH CHECK

D. For the second selection select: ON DELETE CASCADE ON UPDATE NO ACTION

E. For the first selection select: WITH NOCHECK

F. For the second selection select: ON DELETE NO ACTION ON UPDATE NO ACTION

Correct Answer: B,E

Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

Question 14

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.
Your company has employees in different regions around the world.
You need to create a database table that stores the following employee attendance information:
- Employee ID
- date and time employee checked in to work
- date and time employee checked out of work
Date and time information must be time zone aware and must not store fractional seconds.
Solution: You run the following Transact-SQL statement:

Does the solution meet the goal?

A. No

B. Yes

Correct Answer: A

Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

Welcome to TestSimulate

Microsoft Developing SQL Databases (70-762) Free Practice Test