Dezign the database?

Question

Good morning Sirs and Ladies,
soon I starting the project for design of database system (too start project small). I need to know of good site for help the design begin.
Thank you Sirs and Ladies.

Answer 1

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He says that table names should be singular. I've thought about this and finally concluded that it was a good idea,
I disagree - table names should be plural.
The data model describe entities and relations - e.g. a INVOICE entity and its relationship with the CUSTOMER entity.Well, I could speciously argue that you don't know for a fact that you'll ever even have 1 customer or 1 invoice. ;)
How many actual entities are stored in the container is not applicable to the name of the container - as the
table is designed to hold any number (from zero to infinite/amount of diskspace available/pk constraints) of
these entities. Thus using the plural form for the table makes sense - singular does not.If you're taking the strictly logical stance, then yes, I would agree. However, your argument is predicated on
the idea that everyone always knows the exact relationship between the two entities. I think the point
of the page that I indicated to the OP was that for the very prosaic reason that it's just "easier all round"
to just keep everything singular (of course the subtext is that it's "easier all round not to have to think").
Do you feel that tables should all be plural? Or that they should reflect the nature of the tables - think
of my nuclear power plant example - singular CREATE TABLE Core_Meltdown or the plural?
Nomenclature is not a trivial issue - I worked in an airline where the word "flight" meant different things depending
on whether you were talking to Engineering, Flight Crew or Marketing. In IT, we used the word "Leg" for
an aircraft taking off and landing, the table name "Return_Trip" (*) for a return flight and the word "Rotation"
for a series of flights over a season. It took us a while to educate the various departments to use these
words instead of the overly generic "Flight" - or should that be "Flights"?
<to get back to the point at hand>
It was bad enough to get people to agree on a new nomenclature, in order to avoid any of the singular/plural
issues, we used the article at my suggestion. Some of the more clued-in people in the various departments
would be at least granted select privileges on different tables - having everything singular (and everyone
knowing that) eliminated ambiguity. Plural for everything would have served the same purpose.
Paul...
(*) I fought a forlorn battle to have a return "Flight" use the term "Aller_Retour", but was rebuffed by
the Philistine PHB's.