> But after looking closely at the list of a possible properties, i found
> out that some of them depend on others. For example, if item is a
> PDF document, it can have an index. But a document can also have an
> index with links. Logically, a properties like 'index with links'
> don't belong to the verification table - they look like a kind of
> a composite field - 'index with links' is not a stand-alone property,
> but it also implies that an item also has an 'index' property.
> On the other hand, it is impossible to decouple 'index' from
> 'with links', because the second part won't have any meaning without
> the first part.
You mean your properties would be better organized as a tree ?Or is it even more complicated than that ?
If it's a tree, look at the ways of storing a tree in a table.