Re: "_id" in DAPPER DDS

[Joe Sirott <Joe.Sirott@xxxxxxxx>]

Hi Arnaud,

The only requirement for the _id variable is that it be unique for each 
inner sequence. It can be generated any way you like. It's similar to a 
primary key in a relational database.

Arnaud FOREST wrote:
> Hi all,
>
> Sorry for the mail I wrote before with the wrong subject
> so I re-sent with the right subject
>
> I want to know what is the origin of the data
> which filled this variable "_id" in the dapper DDS.
>
> What is the relation between "_id" and the data ?
> Does it be an unique identifier made from a counter ?
> Does it be fulfilled with data from the netcdf file ?
>
> So you can see here the only answer i found on the Dapper Website :
> "#  The id variable must be named _id. This value must be unique and is
> used to retreive the inner sequence."
> (http://www.epic.noaa.gov/epic/software/dapper/dapperdocs/metadata.html)
>
> Thanks .
>
> Forest Arnaud