Q1. 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 and enforce the following business rules: Solution: You implement a FOR UPDATE trigger on the table. Does the solution meet the goal?
A. Yes
B. No
Answer: B
Explanation:
References: http://stackoverflow.com/questions/16081582/difference-between-for-update-of-and-for-update
Q2. DRAG DROP
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:
1. Allow users access to the CustomerName and CustomerNumber columns for active customers.
2. Allow changes to the columns that the view references. Modified data must be visible through the view.
3. Prevent the view from being published as part of Microsoft SQL Server replication. Sales.Female.Customers must meet the following requirements:
1. Allow users access to the CustomerName, Address, City, State and PostalCode columns.
2. Prevent changes to the columns that the view references.
3. 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 Transacr-SQL statement:
The following table displays a selected columns and rows from the Customer table. Thr 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.
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.
Users report that the following SELECT statement statement takes a long time to complete:
You need to create an index that meets the following requirements:
1. Improve the performance of the SELECT statement.
2. requires minimum index key size.
3. Only contains active customers.
4. Makes no change to the existing primary key.
5. Contains all of the columns required by the SELECT statement.
Which three Transact_SQL segments should you use to develop the solution? To answer, move the appropriate code blocks from the list of code blocks to the answer area and arrange them in the correct order.
Answer:
Explanation:
Box 1: Clustered Index
With the same size of keys, the nonclustered indexes need more space than clustered
indexes.
Box 2, Box 3:
Include the CustomerStatus column in the index, and only when CustomerStatusnot equal to 1 (the active customers).
References:http://www.sqlserverlogexplorer.com/overview-of-cluster-and-noncluster-index/
Q3. HOTSPOT
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 Sales that contains the following database tables: Customer, Order, and Products. The Products table and the Order table are shown in the following diagram.
The customer table includes a column that stores the data 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 implement a stored procedure that deletes a discontinued product from the Products table. You identify the following requirements:
What should you do? To answer, select the appropriate Transact-SQL segments in the answer area.
Answer:
Explanation:
Using TRY...CATCH inTransact-SQL
Errors in Transact-SQL code can be processed by using a TRY…CATCH construct. TRY…CATCH can use the following error function to capture error information:
ERROR_MESSAGE() returns the complete text of the error message. The text includes the
values supplied for any substitutable parameters such as lengths, object names, or times. References:https://technet.microsoft.com/en-us/library/ms179296(v=sql.105).aspx
Q4. You have a database that is experiencing deadlock issues when users run queries. You need to ensure that all deadlocks are recorded in XML format.
What should you do?
A. Create a Microsoft SQL Server Integration Services package that uses sys.dm_tran_locks.
B. Enable trace flag 1224 by using the Database Cpmsistency Checker(BDCC).
C. Enable trace flag 1222 in thestartup options for Microsoft SQL Server.
D. Use the Microsoft SQL Server Profiler Lock:Deadlock event class.
Answer: C
Explanation:
When deadlocks occur, trace flag 1204 and trace flag 1222 return information that is capturedin the SQL Server error log.Trace flag 1204 reports deadlock information formatted by each node involved in the deadlock. Trace flag 1222 formats deadlock information, first by processes and then by resources.
The output format for Trace Flag 1222 only returns information in an XML-like format. References:https://technet.microsoft.com/en-us/library/ms178104(v=sql.105).aspx
Q5. 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. Yes
B. No
Answer: A
Explanation:
Datetimeoffset defines a date that is combined with a time of a day that has time zone awareness and is based on a 24-hour clock.
Syntaxis: datetimeoffset [ (fractional seconds precision) ]
Forthe use"datetimeoffset(0)", the Fractional seconds precision is 0, which is required here. References:https://msdn.microsoft.com/en-us/library/bb630289.aspx
Q6. 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:
1. Allow users access to the CustomerName and CustomerNumber columns for active customers.
2. Allow changes to the columns that the view references. Modified data must be visible through the view.
3. Prevent the view from being published as part of Microsoft SQL Server replication. Sales.Female.Customers must meet the following requirements:
1. Allow users access to the CustomerName, Address, City, State and PostalCode columns.
2. Prevent changes to the columns that the view references.
3. 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 Transacr-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.
You must update the design of the Customer table to meet the following requirements.
1. You must be able to store up to 50 accounts for each customer.
2. Users must be able to retrieve customer information by supplying an account number.
3. Users must be able to retrieve an account number by supplying customer information. You need to implement the design changes while minimizing data redundancy.
What should you do?
A. Splitthe table into three separate tables. Include the AccountNumber and CustomerID columns in the first table. Include the CustomerName and Gender columns in the second table. Include the AccountStatus column in the third table.
B. Split the table into two separate tables. Include AccountNumber, CustomerID, CustomerName and Gender columns in the first table. Include the AccountNumber and AccountStatus columns in the second table.
C. Split the table into two separate tables, Include the CustomerID and AccountNumber columns in the first table. Include the AccountNumber, AccountStatus, CustomerName and Gender columns in the second table.
D. Split the table into two separate tables, Include the CustomerID, CustomerName and Gender columns in the first table. IncludeAccountNumber, AccountStatus and CustomerID columns in the second table.
Answer: D
Explanation:
Two tables is enough.CustomerID must be in both tables.
Q7. HOTSPOT
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:
1. The table must reference the ProductID column in the Product table
2. Existing records in the ProductReview table must not be validated with the Product table.
3. Deleting records in the Product table must not be allowed if records are referenced by the ProductReview table.
4. 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:
1. Create new rows in the table without granting INSERT permissions to the table.
2. 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 the Sales Order table
How should you complete the table definition? To answer? select the appropriate Transact- SQL segments in the answer area.
Answer:
Explanation:
Box 1: NONCLUSTERED HASHWITH (BUCKET_COUNT = 10000000)
Hash index is preferable over a nonclustered index when queries test the indexed columns by use of a WHERE clause with an exact equality on all index key columns. We should use a bucket count of 10 million.
Box 2: SCHEMA_ONLY
Durability: The value of SCHEMA_AND_DATA indicates that the table is durable, meaning that changes are persisted on disk and survive restart or failover. SCHEMA_AND_DATA is
the default value.
The value of SCHEMA_ONLY indicates that the table is non-durable. The table schema is persisted but any data updates are not persisted upon a restart or failover of the database. DURABILITY=SCHEMA_ONLY is only allowed with MEMORY_OPTIMIZED=ON.
References:https://msdn.microsoft.com/en-us/library/mt670614.aspx
Q8. Note: This question is part of a series of questions that use the same 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 are developing an application to track customer sales. You create tables to support the application. You need to create a database object that meets the following data entry requirements:
What should you create?
A. extended procedure
B. CLR procedure
C. user-defined procedure
D. DML trigger
E. DDL trigger
F. scalar-valued function
G. table-valued function
Answer: C
Explanation:
References: https://msdn.microsoft.com/en-us/library/ms345075.aspx
Q9. 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. a System Monitor report
B. a sys.dm_exec_query_stats dynamic management view query
C. a sys.dm_exec_session_wait_stats dynamicmanagement view query
D. an Activity Monitor session in Microsoft SQL Management Studio.
Answer: C
Explanation:
sys.dm_exec_session_wait_stats returns information about all the waits encountered by threads that executed for each session. You can use this view to diagnose performance issues with the SQL Server session and also with specific queries and batches.
Note: SQL Server wait stats are, at their highest conceptual level, grouped into two broad categories: signal waits and resource waits. A signal wait is accumulated by processes running on SQL Server which are waiting for a CPU to become available (so called because the process has “signaled” that it is ready for processing). A resource wait is accumulated by processes running on SQL Server which are waiting fora specific resource to become available, such as waiting for the release of a lock on a specific record.
Q10. 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 stored 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 stored procedure on the Employees table. Does the solution meet the goal?
A. Yes
B. No
Answer: B
Explanation:
We should use table-valued functions, not procedures, to customize the recorded change data.
References: https://msdn.microsoft.com/en-us/library/cc645858.aspx