Microsoft SQL Server 2012 Internals
by Bob Beauchemin Kalen Delaney Conor Cunningham, Jonathan Kehayias, Benjamin Nevarez, and Paul S. Randal
Chapter 4. Special databases
Kalen Delaney and Benjamin Nevarez
Chapter 3 introduced databases as a collection of objects such as tables, views, and stored procedures and discussed decisions that someone creating a new SQL Server database would have to make. This chapter covers some special databases, such as the SQL Server system databases, as well as database snapshots and the concept of contained databases. The system databases master, model, msdb, tempdb, and the resource database are installed on every instance of SQL Server, and this chapter explains the purpose of each. Because tempdb is critical for optimal functioning and performance of SQL Server, this chapter goes deeper into its internals. Database snapshots—an Enterprise Edition feature ...
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