The relational system Dataphor, heavily influenced by the work of Date
and Darwen in the TTM, is now an open sourced project. Details at:
www.dataphor.org
best,

I'm looking for someone, someone I can get an email from confirming
their opinion for presenting a standard for deleing employees in an HR
database.
The issue is we have thousands of workers and hire several each day,

I hope it is ok to ask this here.
Im having trouble with ERD's.  
I have been given a definition on which to draw an ERD.  I did so, and began
transforming the entities and relationships to relations using the following

After a long time I've browsed c.d.t posts and I noticed the never ending  
subject about objects.
I think some of the following videos might be instructive to some of the  
readers

I know both object oriented programming and DB (SQL). But it seems
that these are incompatible. Or may somebody advice how to meddle them
together?
Being strong in both OOP and DB development, I am yet weak in writing

(Just my stab at moving from the recent topics towards more basic
questions, sorry if there's not much newspeak in it):
Say you have R with (S)upplier, (P)art, (Q)uantity:
R:

2 weeks ago, I have posted a sample of the semantics am using for the
db core that I am building...I was hoping some comments that would
help me sharpen it and make it more effective.  Here are a few
examples of what the language can do.

As you decide whether or not to respond to Perryman,  please consider that
there are a several of us who read what you write with interest.  We may not
always agree with you,  put you have commanded a level of respect from us
that makes Perryman's attempt at condescension ludicrous.

Back in the day, Codd originally defined First Normal Form
(or maybe he was just calling it Normal Form back then)
and proved something about it. Something about an
isomorphism between nested relations and unnested

Say I have two tables, one called property which stores details of
properties, and anothe called property_image that stores a single
image for a property. So either property may have one image or no
image. I know how to do the following join:

1. If you were asked to specify, based on your experience, what are
the top 10 data management problems rooted in poor foundational
knowledge, what would those be?
2. What kind of specific instances in practice that exemplify those

Many people from both side of the fence suggested that functional
programming is a promising idea that can embrace both paradigms. Here
is why I don't think so. Consider the earlier cute exercise:
On Mar 6, 10:55 am, Tegiri Nenashi <TegiriNena...@gmail.com> wrote:

+

The Terrific Trio.
I've been mulling over the discussion  about mixing OO and DB,  with an eye
towards coming up with a system that  permits an object world and a
relational schema to interact and collaborate productively.  So far, I've

Is there generic attributes which can always be defined in the
entities of a conceptual data model ? If yes what are these generic
attributes ? These generic attributes may depend of the context of
information of the entity ?