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Re: some questions
At 06:58 PM 5/9/00 -0500, Vinod Nair wrote:
> 1. Where can I find some details on the implementation of indexes ?
> Is this a backend thing, or does OpenLDAP actually do something with these ?
OpenLDAP database backends (the layer between the frontend and the
underlying database manager) manages indices.
> If I have an indexed attribute that is used in most of my objectclasses,
> what are the performance implications ?
Searches will be faster
Updates (add/modify/modrdn/delete) will be slower.
> 2. How do auxiliary classes actually work ?
OpenLDAP doesn't distinguish categories of object classes.
> Is the auxiliary class data actually stored contiguously
> with the original class data on disk, or is some pointer
> to the aux class data stored (and a performance penalty) ?
Attributes types don't belong to classes, they are allowed/required
by classes. That is, there is only one attribute type X in
a given entry which must be allowed by one of the object classes
of the entry.
> So, are auxiliary classes still the best way to come up
> with an "extensible" schema definition ?
Best? That's depends. I generally recommend schema extension
via auxiliary classes.