On 29/02/2016 15:30, lejeczek wrote:
On 28/02/16 20:50, lejeczek wrote:
fellow users, hopefully you experts too, could help...
...me to understand how, and what should be the best practice to dump
database, then drop it and merge the dumps..
What I'd like to do is something probably many have done and I wonder
how it's done best.
A box will be dumping a database (maybe? tables if it's better) then
dropping (purging the data) it and on a different system that dump
swill be inserted/aggregated into the same database.
It reminds me a kind of incremental backup except for the fact that
source data will be dropped/purged on regular basis, but before a
drop, a dump which later will be used to sort of reconstruct that
same database.
How do you recommend to do it? I'm guessing trickiest bit might this
reconstruction part, how to merge dumps safely, naturally while
maintaining consistency & integrity?
Actual syntax, as usually any code examples are, would be best.
many thanks.
I guess dropping a tables is not really what I should even consider -
should I just be deleting everything from tables in order to remove data?
And if I was to use dumps of such a database (where data was first
cleansed then some data was collected) to merge data again would it
work and merge that newly collected data with what's already in the
database
This sounds like a remarkably reliable way to ensure no data integrity.
What exactly are you trying to achieve? Would replication be the magic
word you're after?
Gary
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