Re: Corporate Acceptance of Creating Views ?

Alan, I have been thinking about proposing the same thing you're talking about here, for we are not 7 X 24 either and we now actually have views that are join of views. (the db is just darn bad design and reporting requirement
quite complicated)

Now, can you tell me in more detail how your "search table" method is carried out ?
How are these tables created/updated ?....Drop x; Create x as select ? ....or by
PL/SQL stored procedures or a package (issuing inserts?) ? do you schedule this
via dbms_job or in scripts ?

I am really curious.
Thanks
jane

"Alan" <alanshein_at_erols.com> wrote in message news:9rmtmf$ugueb$1_at_ID-114862.news.dfncis.de...
> Although I don't "outlaw" views, I haven't found a compelling reason to
use
> them. I create search tables that would otherwise be views, and index them
> for optimum querying. Some tables are partially or totally denormalized,
and
> some have every column indexed. I update the search tables nightly,
weekly,
> or monthly, depending on business need. I don't have to worry about
queries
> or indexing affecting OLTP, and query repsonse is excellent because there
> are fewer joins needed. Also, I don't have the expense of a creating a
view
> instance for each user.
>
> Of course, it really depends on the situation. We are not 7 x 24, so I
have
> the luxury of running the search table updates overnight, the ad hoc
queries
> are fairly predictable, and our security needs are pretty static.
>
> Anyway, I'm not dogmatic about it, but I do need to be convinced that a
view
> is the way to go in a particular situation.
>
> "Thomas Kyte" <tkyte_at_us.oracle.com> wrote in message
> news:9rmeoj01bgk_at_drn.newsguy.com...
> > In article <eQoD7.43362$C7.13166440_at_news02.optonline.net>, "jane"
says...
> > >
> > >Is it true that in general corporate enviornment, the use of Views is
> > >discouraged ? even frowned up ?
> > >
> > >I was working with this "seasoned" developer on developing reports, I
am
> new
> > >to the Oracle enviornment
> > >and she insisted that I should NOT use views if at all possible,
> preferablly
> > >not at all.
> > >
> > >"You should be able to get all the data you need with straight
SQL...even
> if
> > >it have to go for pages !"
> > >"...you are creating yet another dependency...it's another object that
> has
> > >to be maintained !......"
> > >
> > >The thing was with tools like Crystal Reports, it does not handle
manual
> SQL
> > >very well (requires
> > >a separate file to store the query)
> > >
> > >Is this true ? Was she full of bs ?
> > >
> > >thanks
> > >jane
> > >
> > >
> >
> > I love views -- for the same reason packages are the only thing you
should
> use
> > in real code (never a standalong procedure).
> >
> > Packages protect you from changes -- the SPECIFICATION won't change --
but
> the
> > implementation might (eg: you find a bug in the algorithm and fix it --
> the
> > interface didn't change -- same inputs and outputs but the mechanics
> changed)
> >
> >
> > Views are the same way. Underlying data structure changes (eg: someone
> adds a
> > column, denormalizes a table, splits a single table into two, whatever)
> don't
> > affect your CODE -- just your view. Consider the view a
"specificiation",
> fix
> > the view -- you've fixed ALL pieces of code that use it.
> >
> > There are some people who say -- you should NEVER query a table. You
> should
> > always query a view. These people are never phased by a request to
change
> a
> > column name or the order of columns in a table definition as it is as
> trivial as
> > dropping and recreating the view now.
> >
> > I might not go that far (but when asked to change a column name -- i
will
> rename
> > the table, create a view and grant on the view, no one ever knows).....
> but it
> > shows there is a difference of opinion out there.
> >
> > Views are a tool, a programming construct. Anyone who "outlaws" them is
> *wrong*
> > and being very short sighted.
> >
> > --
> > Thomas Kyte (tkyte@us.oracle.com) http://asktom.oracle.com/
> > Expert one on one Oracle, programming techniques and solutions for
Oracle.
> > http://www.amazon.com/exec/obidos/ASIN/1861004826/
> > Opinions are mine and do not necessarily reflect those of Oracle Corp
> >
>
>
Received on Thu Nov 01 2001 - 14:14:22 CST