Examen 70-461 V001
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#1. You administer a Microsoft SQL Server 2012 database that has multiple tables in the Sales schema. Some users must be prevented from deleting records in any of the tables in the Sales schema. You need to manage users who are prevented from deleting records in the Sales schema. You need to achieve this goal by using the minimum amount of administrative effort. What should you do?
#2. You develop a database for a travel application. You need to design tables and other database objects. You create the Airline_Schedules table. You need to store the departure and arrival dates and times of flights along with time zone information. What should you do?
#3. You are a database developer at an independent software vendor. You create stored procedures thatcontain proprietary code. You need to protect the code from being viewed by your customers. Which storedprocedure option should you use?
#4. You are developing a database that will contain price information. You need to store the prices that include a fixed precision and a scale of six digits. Which data type should you use?
Explanation: Numeric is the only one in the list that can give a fixed precision and scale. http://msdn.microsoft.com/en-us/library/ms179882.aspx
#5. Your database contains two tables named DomesticSalesOrders and InternationalSalesOrders. Both tablescontain more than 100 million rows. Each table has a Primary Key column named SalesOrderId. The datain the two tables is distinct from one another. Business users want a report that includes aggregateinformation about the total number of global sales and total sales amounts. You need to ensure that yourquery executes in the minimum possible time. Which query should you use?
Explanation: http://msdn.microsoft.com/en-us/library/ms180026.aspx http://blog.sqlauthority.com/2009/03/11/sql-server-difference-between-union-vs-union-alloptimalperformance-comparison/
http://blog.sqlauthority.com/2009/03/11/sql-server-difference-between-union-vs-union-all-optimalperformance-comparison/
