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Q11. 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 question 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 create a table named Customer by running the following Transact-SQL statement:
You must insert the following data into the Customer table:
You need to ensure that both records are inserted or neither record is inserted. Solution: You run the following Transact-SQL statement:
Does the solution meet the goal?
A. Yes
B. No
Answer: A
Explanation:
With the INSERT INTO..VALUES statement we can insert both values with just one statement. This ensures that both records or neither is inserted.
References: https://msdn.microsoft.com/en-us/library/ms174335.aspx
Q12. You have a database named MyDb. You run the following Transact-SQL statements:
A value of 1 in the IsActive column indicates that a user is active.
You need to create a count for active users in each role. If a role has no active users. you must display a zero as the active users count.
Which Transact-SQL statement should you run?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: C
Q13. 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 database that is denormalized. Users make frequent changes to data in a primary table.
You need to ensure that users cannot change the tables directly, and that changes made to the primary table also update any related tables.
What should you implement?
A. the COALESCE function
B. a view
C. a table-valued function
D. the TRY_PARSE function
E. a stored procedure
F. the ISNULL function
G. a scalar function
H. the TRY_CONVERT function
Answer: B
Explanation:
Using an Indexed View would allow you to keep your base data in properly normalized tables and maintain data-integrity while giving you the denormalized "view" of that data.
References: http://stackoverflow.com/questions/4789091/updating-redundant-denormalized-data-automatically-in-sql-server
Q14. 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 create a table by running the following Transact-SQL statement:
You need to audit all customer data.
Which Transact-SQL statement should you run?
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
F. Option F
G. Option G
H. Option G
Answer: B
Explanation:
The FOR SYSTEM_TIME ALL clause returns all the row versions from both the Temporal and History table.
Note: A system-versioned temporal table defined through is a new type of user table in SQL Server 2021, here defined on the last line WITH (SYSTEM_VERSIONING = ON…, is designed to keep a full history of data changes and allow easy point in time analysis.
To query temporal data, the SELECT statement FROM<table> clause has a new clause FOR SYSTEM_TIME with five temporal-specific sub-clauses to query data across the current and history tables.
References: https://msdn.microsoft.com/en-us/library/dn935015.aspx
Q15. You have a database that contains the following tables:
Customer
CustomerAudit
Where the value of the CustomerID column equals 3, you need to update the value of the CreditLimit column to 1000 for the customer. You must ensure that the change to the record in the Customer table is recorded on the CustomerAudit table.
Which Transact-SQL statement should you run?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: D
Explanation:
The OUTPUT Clause returns information from, or expressions based on, each row affected by an INSERT, UPDATE, DELETE, or MERGE statement. These results can be returned to the processing application for use in such things as confirmation messages, archiving, and other such application requirements. The results can also be inserted into a table or table variable. Additionally, you can capture the results of an OUTPUT clause in a nested INSERT, UPDATE, DELETE, or MERGE statement, and insert those results into a target table or view.
Note: If the column modified by the .RITE clause is referenced in an OUTPUT clause, the complete value of the column, either the before image in deleted.column_name or the after image in inserted.column_name, is returned to the specified column in the table variable.
Q16. 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 database that contains tables named Customer_CRMSystem and Customer_HRSystem. Both tables use the following structure:
The tables include the following records: Customer_CRMSystem
Customer_HRSystem
Records that contain null values for CustomerCode can be uniquely identified by CustomerName.
You need to display a Cartesian product, combining both tables. Which Transact-SQL statement should you run?
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
F. Option F
G. Option G
H. Option H
Answer: G
Explanation:
A cross join that does not have a WHERE clause produces the Cartesian product of the tables involved in the join. The size of a Cartesian product result set is the number of rows in the first table multiplied by the number of rows in the second table.
References: https://technet.microsoft.com/en-us/library/ms190690(v=sql.105).aspx
Q17. 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 database that contains tables named Customer_CRMSystem and Customer_HRSystem. Both tables use the following structure:
The tables include the following records: Customer_CRMSystem
Customer_HRSystem
Records that contain null values for CustomerCode can be uniquely identified by CustomerName.
You need to display a list of customers that do not appear in the Customer_HRSystem table.
Which Transact-SQL statement should you run?
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
F. Option F
G. Option G
H. Option H
Answer: D
Explanation:
EXCEPT returns distinct rows from the left input query that aren’t output by the right input query.
References: https://msdn.microsoft.com/en-us/library/ms188055.aspx
Q18. 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 on this series.
You have a database that tracks orders and deliveries for customers in North America. System versioning is enabled for all tables. The database contains the Sales.Customers, Application.Cities, and Sales.CustomerCategories tables.
Details for the Sales.Customers table are shown in the following table:
Details for the Application.Cities table are shown in the following table:
Details for the Sales.CustomerCategories table are shown in the following table:
You are creating a report to show when the first customer account was opened in each city. The report contains a line chart with the following characteristics:
- The chart contains a data point for each city, with lines connecting the points.
- The X axis contains the position that the city occupies relative to other cities.
- The Y axis contains the date that the first account in any city was opened. An example chart is shown below for five cities:
During a sales promotion, customers from various cities open new accounts on the same date.
You need to write a query that returns the data for the chart.
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.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Box 1: RANK() OVER
RANK returns the rank of each row within the partition of a result set. The rank of a row is one plus the number of ranks that come before the row in question.
ROW_NUMBER and RANK are similar. ROW_NUMBER numbers all rows sequentially (for example 1, 2, 3, 4, 5).
Q19. You have a database named MyDb. You run the following Transact-SQL statements:
A value of 1 in the IsActive column indicates that a user is active.
You need to create a count for active users in each role. If a role has no active users. you must display a zero as the active users count.
Which Transact-SQL statement should you run?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: C
Q20. You need to create an indexed view that requires logic statements to manipulate the data that the view displays.
Which two database objects should you use? Each correct answer presents a complete solution.
A. a user-defined table-valued function
B. a CRL function
C. a stored procedure
D. a user-defined scalar function
Answer: A,C