svn & release numbering confusiuon

[insertname1]

ok I have compiled the latest from svn, managed to get it running with Active perl 5.12 , however I had to totally redo a new database and from reading and serching during all this - and sorry if Im just to thick - how is all this numbered?
db_dump.sql from SVN is 1900? How does the server version tie into that, or does it?
Im confused because Ive had to go back through the filed numerically to get quests / tasks working and - just now - for bots ( 1723 )

I know clear as mud, its a curse..... anyway ...... Im wondering if anyone put together a list of how far back we need to source in the "updates' to have a complete database? All I found by serching is random hints here and there.
The updates I have are from 1 to 2004 in the svn, most seem redundant when run.

Sorry if this is obvious to everyone but me, Ive tried to searc it out - a definitive answer - couldnt find it, well not one my noob brain could fathom.

Thanks