Re: I think that relational DBs are dead. See link to my article inside

Sorry (Typo) I meant how do you handle missing data?

Dmitry Shuklin wrote:
> Hi Cimode,
>
>
> > But do you treat NULL values?
>
> There is no NULL values as type or something existing in logic level.
> But this concept is exists. For example. let assume that collection
> 'table' exists with 2 columns 'name' and 'value'. For example this
> collection contains one object instance (row). This object (node) has
> one link to anoter node colored by 'name' and doesn't have a link
> colored by 'value'. So this row has value for 'name' column and 'NULL'
> for 'value'.
>
> In inmplementation level such cases handled by using
> System.DBNull.Value
>
> Also this row can has a link colored as 'value2' which is not visible
> via collection 'table' but visible via collection 'table2'
>
>
> > How do you count all instances that
> > satisfy a specific condition? If it is statically stored in a point in
> > time?
>
> In logic level - by the same way as RDB it does.
> In implementation (current version) by full scan only. I have plans to
> implement indexes. It can be done by the same way as current RDBMS it
> implements.
>
> also objective joins and views are supported on logical level but
> implemented very dirty yet. (DB has issues with garbage collection of
> circular referenced nodes)
>
> WBR,
> Dmitry
Received on Thu Jul 06 2006 - 15:04:18 CEST