Re: Genealogical evidence and data model

Haines Brown wrote:

> A very interesting thread. I hope no one minds if a non-genealogist
> jumps in with questions.
> 
> My sense of the distinction of a relation-based and an event based
> structure is clear to me only in the abstract, but not in concrete
> terms. Would someone be willing to offer a simple example of each to
> help make the distinction clearer?

Leaping happily to the conclusion that you mean 
lineage-linked vs event-linked, rather than what you've 
rather clearly SAID (relation-based vs event based) ...

Succinctly: lineage-linked concerns itself with WHO; 
event-linked concerns WHAT.

In a Lineage-linked database, the im****tant thing is the 
linkage between a maximum of three persons (two parents and 
a child).  It confines itself to those persons believed to 
social and/or biological relations (parent, child, spouse).



In an event-linked database, the im****tant thing is the 
EVENT itself, to which may be linked/attached to an 
unlimited number of persons.  An event-linked database CAN 
include (but need not include) all persons present at the 
event.

--In the case of a marriage, all persons present include the 
clergy, the altar-boys, the organist, the choir, the 
janitor, the guests, the bride, the groom, their attendants, 
any officialdom necessary in your corner of the world, the 
parents of the bride and groom ...

--In the Event of a baptism, all persons present again 
include the baptisee, the parents, the clergy, the organist, 
congregation, witnesses/sponsors/godparents ...



HTH

Cheryl