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Microsoft 70-457 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Manage and Maintain Databases | 20-25% | - Implement high availability features - Monitor SQL Server activity - Implement security principles - Configure SQL Server instances - Manage backups and restores |
| Troubleshoot and Optimize Queries | 15-20% | - Analyze execution plans - Optimize indexes and statistics - Use query hints and execution plans - Identify and resolve performance issues |
| Create Database Objects | 27-32% | - Create stored procedures - Create functions and triggers - Create and modify views - Create and alter indexes - Design and implement tables |
| Work with Data | 28-33% | - Implement subqueries and joins - Modify data using INSERT, UPDATE, DELETE - Apply built-in functions and aggregate functions - Manage transactions and error handling - Query data using SELECT statements |
Microsoft Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 1 Sample Questions:
You use Microsoft SQL Server 2012 to develop a database that has two tables named Div1Cust and Div2Cust. Each table has columns named DivisionID and CustomerId . None of the rows in Div1Cust exist in Div2Cust. You need to write a query that meets the following requirements:
The rows in Div1Cust must be combined with the rows in Div2Cust.
The result set must have columns named Division and Customer.
Duplicates must be retained.
Which three Transact-SQL statements should you use? (To answer, move the appropriate statements from the list of statements to the answer area and arrange them in the correct order.)
Build List and Reorder:
Correct Answer:
Explanation:
--Burgos - NO
Reference: http://msdn.microsoft.com/en-us/library/ms180026.aspx Reference: http://msdn.microsoft.com/en-us/library/ms188055.aspx
You have a database that contains the tables shown in the exhibit. (Click the Exhibit button).
You need to create a query for a report. The query must meet the following requirements:
NOT use object delimiters.
Return the most recent orders first.
Use the first initial of the table as an alias.
Return the most recent order date for each customer.
Retrieve the last name of the person who placed the order.
Return the order date in a column named MostRecentOrderDate that appears as the last column in the report.
The solution must support the ANSI SQL-99 standard.
Which code segment should you use?
To answer, type the correct code in the answer area.
- A. select C.Lastname, P.MostRecentOrderDate from customers AS C inner join ( select customID, MostRecentOrderDate=max(orderDate) from orders group by customID
)P
on C.customerID=P.CustomerID
order by P.MostRecentOrderDate desc - B. SELECT LastName, O.OrderDate AS MostRecentOrderDate FROM Customers AS C INNER JOIN Orders AS O ON CustomerID = O.CustomerID ORDER BY O.OrderDate DESC
- C. SELECT c.CustomerID --optional c.LastName, max(o.OrderDate) 'MostRecentOrderDate' FROM Customer c LEFT OUTER JOIN Orders o ON o.CustomerID = c.CustomerID GROUP BY c.CustomerID, c.LastName ORDER BY 3 DESC
Correct Answer: C 🗳️
Explanation: Only visible for Lead2Passed members. You can sign-up / login (it's free).
You develop a Microsoft SQL Server 2012 database. The database is used by two web applications that access a table named Products. You want to create an object that will prevent the applications from accessing the table directly while still providing access to the required data. You need to ensure that the following requirements are met:
Future modifications to the table definition will not affect the applications' ability to access data.
The new object can accommodate data retrieval and data modification.
You need to achieve this goal by using the minimum amount of changes to the existing applications.
What should you create for each application?
- A. table partitions
- B. views
- C. stored procedures
- D. table-valued functions
Correct Answer: B 🗳️
Explanation: Only visible for Lead2Passed members. You can sign-up / login (it's free).
You are developing a database application by using Microsoft SQL Server 2012. An application that uses a database begins to run slowly. You discover that during reads, the transaction experiences blocking from concurrent updates. You need to ensure that throughout the transaction the data maintains the original version. What should you do?
- A. Add a HASH hint to the query.
- B. Enable the optimize for ad hoc workloads option.
- C. Include a SET FORCEPLAN ON statement before you run the query.
- D. Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query.
- E. Add a FORCESCAN hint to the Attach query.
- F. Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query.
- G. Add a LOOP hint to the query.
- H. Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query.
- I. Include a SET STATISTICS PROFILE ON statement before you run the query.
- J. Add a FORCESEEK hint to the query.
- K. Add an INCLUDE clause to the index.
- L. Cover the unique clustered index with a columnstore index.
- M. Include a SET STATISTICS SHOWPLAN_XML ON statement before you run the query.
- N. Add a columnstore index to cover the query.
Correct Answer: D 🗳️
You administer a SQL Server 2012 server that contains a database named SalesDb. SalesDb contains a schema named Customers that has a table named Regions. A user named UserA is a member of a role named Sales. UserA is granted the Select permission on the Regions table. The Sales role is granted the Select permission on the Customers schema. You need to ensure that UserA is disallowed to select from any of the tables in the Customers schema. Which Transact-SQL statement should you use?
- A. DENY SELECT ON Schema::Customers FROM Sales
- B. DENY SELECT ON Object::Regions FROM Sales
- C. REVOKE SELECT ON Schema::Customers FROM Sales
- D. REVOKE SELECT ON Schema::Customers FROM UserA
- E. REVOKE SELECT ON Object::Regions FROM Sales
- F. REVOKE SELECT ON Object::Regions FROM UserA
- G. EXEC sp droprolemember 'Sales', 'UserA'
- H. DENY SELECT ON Schema::Customers FROM UserA
- I. DENY SELECT ON Object::Regions FROM UserA
- J. EXEC sp_addrolemember 'Sales', 'UserA'
Correct Answer: H 🗳️
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