Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine
 
PerlMonks  

Re: Verify database consistency after merge

by astaines (Curate)
on Oct 16, 2006 at 20:57 UTC ( #578590=note: print w/replies, xml ) Need Help??


in reply to Verify database consistency after merge

It depends on what you mean by consistency. Possible ideas include the following :-

  • Completely reversible - you can get out what you put in
  • All exisitng queries give exactly the same answer with the new structure
  • The two data structures are formally equivalent to the old one in the sense that all true (and false) statements about the original two files remain true (and false) for the new file

This is tricky to say the least, and requires a lot of consideration. My advice would be simple, unless you have to do this, don't!

-- Anthony Staines
  • Comment on Re: Verify database consistency after merge

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://578590]
help
Chatterbox?
[erix]: D.: yeah, I am in the low countries. To be precise, I am 0.5m above sea level
[erix]: going for a run in the dunes - unless the storm (well, Beaufort 7) gets fiercer
Discipulus had stew with tomato sauce, onions, carrots and potatoes + bottle of red wine and still warm bred.. slept as dynosaur

How do I use this? | Other CB clients
Other Users?
Others studying the Monastery: (11)
As of 2017-11-22 09:11 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    In order to be able to say "I know Perl", you must have:













    Results (316 votes). Check out past polls.

    Notices?