Differences between 2000,2005 & 2008..

SQL SERVER 2000:
1.Query Analyser and Enterprise manager are separate.
2.No XML datatype is used.
3.We can create maximum of 65,535 databases.
4.Nill
5.Nill
6.Nill
7.Nill
8.Nill
9.Nill
10.Nill
11.Nill
12.Nill
13.cant compress the tables and indexes.
14.Datetime datatype is used for both date and time.
15.No varchar(max) or varbinary(max) is available.
16.No table datatype is included.
17.No SSIS is included.
18.CMS is not available.
19.PBM is not available.

SQL SERVER 2005:

1.Both are combined as SSMS(Sql Server management Studio).
2.XML datatype is introduced.
3.We can create 2(pow(20))-1 databases.
4.Exception Handling
5.Varchar(Max) data type
6.DDL Triggers
7.DataBase Mirroring
8.RowNumber function for paging
9.Table fragmentation
10.Full Text Search
11.Bulk Copy Update
12.Cant encrypt
13.Can Compress tables and indexes.(Introduced in 2005 SP2)
14.Datetime is used for both date and time.
15.Varchar(max) and varbinary(max) is used.
16.No table datatype is included.
17.SSIS is started using.
18.CMS is not available.
19.PBM is not available.

SQL SERVER 2008:
1.Both are combined as SSMS(Sql Server management Studio).
2.XML datatype is used.
3.We can create 2(pow(20))-1 databases.
4.Exception Handling
5.Varchar(Max) data type
6.DDL Triggers
7.DataBase Mirroring
8.RowNumber function for paging
9.Table fragmentation
10.Full Text Search
11.Bulk Copy Update
12.Can encrypt the entire database introduced in 2008.
--check it(http://technet.microsoft.com/en-us/library/cc278098(SQL.100).aspx)
(http://www.sqlservercentral.com/articles/Administration/implementing_efs/870/)
(http://www.kodyaz.com/articles/sql-server-2005-database-encryption-step-by-step.aspx)
(http://www.sql-server-performance.com/articles/dev/encryption_2005_1_p1.aspx)
(http://geekswithblogs.net/chrisfalter/archive/2008/05/08/encrypt-documents-with-sql-server.aspx)
13.Can compress tables and indexes.
-http://www.mssqltips.com/tip.asp?tip=1582
14.Date and time are seperately used for date and time datatype,geospatial and timestamp with internal timezone
is used.
15.Varchar(max) and varbinary(max) is used.
16.Table datatype introduced.
17.SSIS avails in this version.
18.Central Management Server(CMS) is Introduced.
-http://msdn.microsoft.com/en-us/library/bb934126.aspx
-http://www.sqlskills.com/BLOGS/KIMBERLY/post/SQL-Server-2008-Central-Management-Servers-have-you-seen-these.aspx
19.Policy based management(PBM) server is Introduced.
-http://www.mssqltips.com/tip.asp?tip=1492
-http://msdn.microsoft.com/en-us/library/bb510667.aspx