dhis2-devs team mailing list archive

[Knut Staring <knutst@xxxxxxxxx>]

Hi Alvin,

Thanks for valuable input - we have tried to amass "best practice"
guidelines in the implementation manual, but I'm sure it would be useful to
have "policy templates" as well. Given your experience, could you perhaps
detail a bit more what you think such templates should look like? And what
topics you think should be covered?

Cheers,
Knut


On Tue, Oct 22, 2013 at 12:32 AM, Alvin Marcelo <alvin.marcelo@xxxxxxxxx>wrote:

> Lars,
>
> I like this approach. Fundamentally, it boils down to local policy and it
> would help policy writers if we can give them templates on how this can be
> done. Come to think of it, are there policy templates for DHIS2
> implementations? They were my weak areas when I was trying to implement it
> at PhilHealth...
>
> Although I knew ours will not be exactly the same as other countries'
> implementations, there would be similarities which we could "replicate as
> base document" and customize...
>
> alvin
>
>
>
>
>
>
>
> On Mon, Oct 21, 2013 at 10:49 PM, Lars Helge Øverland <larshelge@xxxxxxxxx
> > wrote:
>
>> Hi Alvin,
>>
>> its a good point and something we have been thinking about for a while.
>> This is something that we definitely need to act on soon.
>>
>> The challenge is to find a sensible level of detail for what to store, as
>> there are costs in terms of i) system complexity and ii) aggregation
>> performance degradation involved here. For example, if facilities are moved
>> around in administrative boundaries every month, how do you calculate the
>> yearly total for the whole province?
>>
>> My suggestion, as a reasonable trade-off, would be to create snapshots of
>> the organisation unit hierarchy at the end of each year. These snapshots
>> are then used for analytics queries for past data. So for instance if you
>> query today for "last 12 months", it would use the current "live"
>> organisation unit hierarchy for months Jan-Sept 2013, then the "2012
>> snapshot" hierarchy for months Oct-Dec 2012.
>>
>> On an implementation note, this will fit well the analytics solution
>> where data is partitioned across years - each data partition will have a
>> corresponding org unit hierarchy, making aggregation simple.
>>
>> Lars
>>
>>
>>
>>
>>
>
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-- 
Knut Staring
Dept. of Informatics, University of Oslo
+4791880522
http://dhis2.org