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QUESTION 31
Drag and Drop Question
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:
QUESTION 32
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-SOL 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 Sale Price 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 1/0 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-SOL statement? To answer? select the appropriate Transact-SOL segments in the answer area.
Select two alternatives.
A. For the first selection select: WITH CHECK
B. For the first selection select : WITH NOCHECK
C. For the second selection select: ON DELETE NO ACTION ON UPDATE CASCADE
D. For the second selection select: ON DELETECASCADE ON UPDATE CASCADE
E. For the second selection select: ON DELETE NO ACTION ON UPDATE NO ACTION
F. For the second selection select: ON DELETE CASCADE ON UPDATE NO ACTION
Answer: BC
QUESTION 33
Hotspot Question
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-SOL 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 Sale Price 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 1/0 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 an object that allows finance users to be able to retrieve the required data. The object must not have a negative performance impact.
How should you complete the Transact-SOL statements? To answer, select the appropriate TransactSOL segments in the answer area.
Answer:
QUESTION 34
You have a reporting database that includes a non-partitioned fact table named Fact_Sales.
The table is persisted on disk.
Users report that their queries take a long time to complete.
The system administrator reports that the table takes too much space in the database.
You observe that there are no indexes defined on the table, and many columns have repeating values.
You need to create the most efficient index on the table, minimize disk storage and improve reporting query performance.
What should you do?
A. Create a clustered index on the table.
B. Create a nonclustered index on the table.
C. Create a nonclustered filtered index on the table.
D. Create a clustered column store index on the table.
E. Create a nonclustered column store index on the table.
F. Create a hash index on the table.
Answer: D
QUESTION 35
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?
A. Create a clustered index on the table.
B. Create a nonclustered index on the table.
C. Create a nonclustered filtered index on the table.
D. Create a clustered column store index on the table.
E. Create a nonclustered column store index on the table.
F. Create a hash index on the table.
Answer: C
QUESTION 36
Drag and Drop Question
You are evaluating the performance of a database environment.
You must avoid unnecessary locks and ensure that lost updates do not occur.
You need to choose the transaction isolation level for each data scenario.
Which isolation level should you use for each scenario? To answer, drag the appropriate isolation levels to the correct scenarios. Each isolation 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:
QUESTION 37
Drag and Drop Question
You have two database tables. Table1 is a partioned table and Table 2 is a nonpartioned table. Users report that queries take a long time to complete.
You monitor queries by using Microsoft SQL Server Profiler.
You observe lock escalation for Tableland Table 2.
You need to allow escalation of Table1 locks to the partition level and prevent all lock escalation for Table2.
Which Transact-SOL statement should you run for each table? To answer, drag the appropriate Transact-SOL statements to the correct tables. Each command 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:
QUESTION 38
Drag and Drop Question
You have a database that contains three encrypted store procedures named dbo.Procl, dbo.Proc2 and dbo.Proc3.
The stored procedures include INSERT, UPDATE, DELETE and BACKUP DATABASE statements.
You have the following requirements:
– You must run all the stored procedures within the same transaction.
– You must automatically start a transaction when stored procedures include DML statements.
– You must not automatically start a transaction when stored procedures include DDL statements.
You need to run all three stored procedures.
Which four Transact-SOL segments should you use to develop the solution? To answer, move the appropriate Transact-SOL segments to the answer area and arrange then in the correct order.
Answer:
QUESTION 39
Hotspot Question
You are profiling a frequently used database table named UserEvents.
The READ_COMMITED_SNAPSHOT database option is set to OFF.
In the trace results, you observe that lock escalation occurred for one stored procedure even though the number of locks in the database did not exceed memory or configuration thresholds. Events details are provided in the following table:
You need to modify the uspDeleteEvents stored procedure to avoid lock escalation.
How should you modify the stored procedure? To answer, select the appropriate Transact-SOL segments in the answer area.
Answer:
QUESTION 40
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 the startup options for Microsoft SQL Server.
D. Use the Microsoft SQL Server Profiler Lock: Deadlock event class.
Answer: C
QUESTION 41
You are developing an application that connects to a database.
The application runs the following jobs:
The READ_COMMITTED_SNAPSHOT database option is set to OFF, and auto-content is set to ON. Within the stored procedures, no explicit transactions are defined. If JobB starts before JobA, it can finish in seconds. If JobA starts first, JobB takes a long time to complete.
You need to use Microsoft SQL Server Profiler to determine whether the blocking that you observe in JobB is caused by locks acquired by JobA.
Which trace event class in the Locks event category should you use?
A. LockAcquired
B. LockCancel
C. LockDeadlock
D. LockEscalation
Answer: A
QUESTION 42
Hotspot Question
You have a database that contains both disk-based and memory-optimized tables.
You need to create two modules.
The modules must meet the requirements described in the following table.
Which programming object should you use for each module? To answer, select the appropriate object types in the answer area.
Answer:
QUESTION 43
You use Microsoft SQL Server Profile to evaluate a query named Queryl.
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?
A. Start a SQL Server Profiler trace for the event class Auto Stats in the Performance event category.
B. Create one Extended Events session with the sqlserver.missing_column_statistics eventadded.
C. Start a SQL Server Profiler trace for the event class Soft Warnings in the Errors and Warnings event category.
D. Create one Extended Events session with the sqlserver.missing_join_predicate event added.
Answer: D
QUESTION 44
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 dynamic management view query
D. an Activity Monitor session in Microsoft SQL Management Studio.
Answer: C
QUESTION 45
Hotspot Question
You are maintaining statistics for a database table named tbiTransaction.
The table contains more than 10 million records.
You need to create a stored procedure that meets the following requirements:
– On weekdays, update statistics for a sample of the total number of records in the table.
– On weekends, update statistics by sampling all rows in the table.
A maintenance task will call this stored procedure daily.
How should you complete the stored procedure? To answer, select the appropriate Transact-SOL segments in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
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