SQL Server 2005 has a number of self-contained system tables, each of which has its own role, and the table below describes the respective system tables and their effects, for informational purposes only.
Sysaltfiles the primary database to save the database files
Syscharsets primary database character set and sort order
Sysconfigures Primary Database configuration options
Syscurconfigs Current configuration options for the primary database
sysdatabases the database in the primary database server
Syslanguages Primary Database language
syslogins Primary Database login account information
Sysoledbusers primary Database linked server login information
sysprocesses the primary database process
Sysremotelogins Primary Database Telnet account
syscolumns each database column
Sysconstrains per database limit
Sysfilegroups per database filegroup
Sysfiles each database file
Sysforeignkeys each database external keyword
Sysindexs per database index
Sysmenbers each database role member
Sysobjects all database objects per database
Syspermissions per database permissions
Systypes each database user-defined data type
sysusers per database user