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Posted by Hugo Kornelis on 10/01/00 11:38
On Fri, 27 Jan 2006 08:27:25 GMT, Neil wrote:
>> then I'd recommend you to go for SQL 2005. Every upgrade
>> you ever do will require you to deal with SOME incompatibilities. But
>> from SQL 7 to SQL 2005 should be relatively easy.
>
>Erland mentioned "compatibility level 90" as possibly entailing some
>incompatibilities. Would you concur?
Hi Neil,
Compatibility level 90 means that you unlock all the new features that
were implemented in SQL Server 2005. Upgrading to SQL Server 2005
without striving for compatibility level 90 is, IMHO, a bit silly.
Lower compatibility levels are included to make upgrading easier. At
compatibility level 70, many features still behave the same as in SQL
Server 7.0. Not all, though - some changes to the core of the DB engine
were just too drastic to allow mimicking the "old" behaviour.
Upgrading from SQL Server 7.0 to SQL Server 2005 at compatibility level
70 means that you have to make only minimal changes - you don't have to
change the features that are still supported in the compatibility level.
But this should only be a first step - the next step should be to
replace old functionality with new functionality, then set the
compatbility level to 90. And after that, you can begin to unleash the
true power of all the new features!
--
Hugo Kornelis, SQL Server MVP
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