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QUESTION 211
You are a database developer of a Microsoft SQL Server database.
The database contains a table named Instructor that has the following definition:
You are designing a new table named Course that has the following definition:
You need to ensure that the InstructorId column in the Course table contains only values that exist in the InstructorID column of the Instructor table.
Which Transact-SQL statement should you use?
A. 
B. 
C. 
D. 
E. 
Answer: C
Explanation:
http://msdn.microsoft.com/en-us/library/ms189049.aspx
QUESTION 212
Hotspot Question
You are designing an order entry system that uses an SQL Server database. The following tables exist in the Purchasing database:
You create the following trigger. Line numbers are included for reference only.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
Answer:
QUESTION 213
Drag and Drop Question
A database has a Customers table that includes the following fields:
You must add a new field named AccountBalance. The AccountBalance field has the following requirements:
The account balance must always include a value.
The account balance must have an initial value of 0.
The account balance must not have a negative value.
You need to add the AccountBalance fields to the table.
How should you complete the relevant Transact-SQL statement? To answer, drag the appropriate Transact-SQL segment to the correct location or 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.
Answer:
QUESTION 214
Hotspot Question
You develop a SQL Server database for an online theater sales company. The database includes the following four tables:
The following diagram shows the tables and their relationships:
Answer:
QUESTION 215
Drag and Drop Question
You need to create a stored procedure to support the following:
– TRY/CATCH error handling
– Transaction management
Which three statements should you include in the stored procedure in sequence? To answer, move the appropriate statements from the list of statements to the answer area and arrange them in the correct order.
Answer:
Explanation:
https://docs.microsoft.com/en-us/sql/t-sql/language-elements/try-catch-transact-sql?view=sql-server-2017
QUESTION 216
You create a table that has the StudentCode, SubjectCode, and Marks columns to record mid-year marks for students. The table has marks obtained by 50 students for various subjects.
You need to ensure that the following requirements are met:
Students must be ranked based on their average marks.
If one or more students have the same average, the same rank must be
given to these students.
Ranks must be sequential without gaps in between.
Which Transact-SQL query should you use?
A. 
B. 
C. 
D. 
E. 
F. 
G. 
H. 
Answer: B
Explanation:
The DENSE_RANK function returns the rank of each row within a result set partition, with no gaps in the ranking values. The rank of a specific row is one plus the number of distinct rank values that come before that specific row.
References: https://docs.microsoft.com/en-us/sql/t-sql/functions/dense-rank-transact-sql?view=sql-server-2017
QUESTION 217
You create a table that has the StudentCode, SubjectCode, and Marks columns to record mid-year marks for students. The table has marks obtained by 50 students for various subjects.
You need to ensure that the following requirements are met:
Students must be ranked based on their average marks.
If one or more students have the same average, incremental ranks must
be given based on the order they are created.
Ranks must be sequential without gaps in between.
Which Transact-SQL query should you use?
A. 
B. 
C. 
D. 
E. 
F. 
G. 
H. 
Answer: C
Explanation:
The ROW_NUMBER numbers the output of a result set. More specifically, returns the sequential number of a row within a partition of a result set, starting at 1 for the first row in each partition.
References: https://docs.microsoft.com/en-us/sql/t-sql/functions/row-number-transact-sql?view=sql-server-2017
QUESTION 218
You create a table that has three columns named StudentCode, SubjectCode, and Marks. The Marks column records grades for students expressed as a percentage. The table has marks obtained by 50 students for various subjects.
You need to retrieve the StudentCode and Marks for students who scored the highest percentage for each subject.
Which Transact-SQL query should you use?
A. 
B. 
C. 
D. 
E. 
F. 
G. 
H. 
Answer: F
Explanation:
We use PARTION BY SubjectCode to get the Subjects, DESC sorting and RANK =1 to get highest scores.
QUESTION 219
Drag and Drop Question
You want to add a new GUID column named ProductGUID to a table named dbo.Product that already contains data.
ProductGUID will have a constraint to ensure that it always has a value when new rows are inserted into dbo.Product.
You need to ensure that the new column is assigned a GUID for existing rows.
Which four Transact-SQL statements should you use to develop the solution? (To answer, move the appropriate Transact-SQL segments from the list of SQL- segments to the answer area and arrange them in the correct order.)
Answer:
Explanation:
Box 1:
Existing BookGuid can be null.
Box 2:
Box 3: new()
Generate a new global value
Box 4:
Actually, in the real world, you don’t have to use WITH VALUES at the end of the statement and it works just as well. But because the question specifically states which FOUR TSQL statements to use, we have to include it.
Reference: http://msdn.microsoft.com/en-us/library/ms190273.aspx
QUESTION 220
You develop a Microsoft SQL Server database. You design a table to store product information. The table is defined as follows:
You need to meet the following requirements:
If a product has a product category value other than “REGULAR”, the
product should have a sub-category with a length of two characters.
If a product has the product category “REGULAR”, the product may or
may not have a sub-category.
Which Transact-SQL statement should you use?
A. 
B. 
C. 
D. 
Answer: C
Explanation:
Either the Category column is REGULAR, or it is not REGULAR and the length of the column is exactly 2.
QUESTION 221
Drag and Drop Question
You are developing a Microsoft Azure SQL Database instance to support a company’s payroll system. The database contains a table named Employee defined by the following Transact-SQL statement:
The company defines five employee levels. Each employee’s level is stored in the Level column. Levels 1,2, and 3 are used for non-executive employees. Levels 4 and 5 are used for executives. Each of the non-executive levels has a defined range that constrains the salary of employees at that level.
You need to create a view that allows non-executive Employees entries to be updated based on the following rules:
Only non-executive employees can be viewed or updated.
Employees can be promoted to a non-executive level.
Employees cannot be promoted to an executive level.
If an employees’ salary changes, the new salary must adhere to the company-defined range for that level.
Which four Transact-SQL segments should you use to develop the solution? To answer, move the appropriate Transact-SQL segments from the list of Transact-SQL segments to the answer area and arrange them in the correct order.
Answer:
Explanation:
Box 1: WITH SCHEMABINDING AS
The syntax is: CREATE VIEW
WITH SCHEMABINDING
AS
Box 2:
SELECT DISTINCT cannot be used here.
Box 3: ORDER BY
Box 4:
Create a clustered index.
References: https://docs.microsoft.com/en-us/sql/relational-databases/views/create-indexed-views?view=sql-server-2017
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