SQL Server Collation is a setting which usually gets set at the time of SQL Server Installation. At the time of database restores from backups which have been taken from other SQL Servers there could be collation mismatches. This could lead sometime to errors like this:
Msg 468, Level 16, State 9, Line 1
Cannot resolve the collation conflict between "SQL_Latin1_General_Pref_CP437_CI_AS" and "SQL_Latin1_General_CP850_BIN" in the equal to operation.
One needs to check certain aspects like collation before doing a restore. Usually the server collation is the baseline, the tempdb follows the SQL Server Collation. A database on a server could be of a different collation from the Server Collation. In order to check the collation of the databases one can run the following query:
select name, collation_name from sys.databases.
The SQL Server Collation can be checked by right clicking on the server and click properties: