Question 28

Answer A is correct. The data in partitioned tables and indexes is horizontally divided into units that can be spread across more than one filegroup in a database. Partitioning can make large tables and indexes more manageable and scalable. Vertically dividing a table by columns would not help when the problem is number of rows. Vertical filtering helps to divide tables that have too many columns.

For more information, see the following sources:

• Chapter 2, "Creating Database Objects," and Chapter 3, "Implementing Database Objects"

• SQL Server 2005 Books Online: "SQL Server Database Engine, Designing and Creating Databases, Partitioned Tables and Indexes"

• "Partitioning Data," http://msdn.microsoft.com/library/default.asp?url=/library/en-us/architec/8_ar_cs_5335.asp

• "Partitioned Tables and Indexes in SQL Server 2005," http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsql90/html/sql2k5partition.asp