XREF limitation?

Nicolas Thierry-Mieg Nicolas.Thierry-Mieg at imag.fr
Wed Jul 3 03:37:58 EST 2002


Hi
Matching_genomic_sequence UNIQUE ?Sequence ...
                           ------

nothing to do with XREF, it's the normal UNIQUE behaviour

bye
Nicolas


Qunfeng Dong wrote:

> Hi there, 
> 
> I am wondering if I am encountering an unknown XREF limitation? 
> 
> Given the following AceDB model
> 
> ?Sequence DNA UNIQUE ?DNA UNIQUE Int
>           Title UNIQUE ?Text
>           Other_name ?Text
>           Type EST
>                Genomic_sequence
>           ...
>           Matching_genomic_sequence  UNIQUE ?Sequence XREF Matching_ESTs
>           Matching_ESTs  ?Sequence XREF Matching_genomic_sequence
>           ...
> 
> Now given the following ace file
> 
> 	Sequence : g1
> 	Matching_ESTs e
> 
> 	Sequence : g2
> 	Matching_ESTs e
> 
> The above acefile is intended to say that the same EST sequence e
> matches both Genomic_sequence g1 and g2 (probably because g1 g2 are
> homologous seq). However, Then when this data file was loaded into
> AceDB, the database only recorded the second information g2 - e but
> flushed out the first one g1 - e.
> 
> Is this a known XREF limitation? If so, Any suggestions of how to overcome it?
> Thanks in advance!
> 
> Qunfeng Dong
> 
> 






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