> you mixed a lot of functional information in your question, so > its difficult to follow the exact 'oracle' question you are asking.
Sorry, but I'm still learning. > > if you are using a 'materialized view' you will need to > refresh the snapshot? this is used if you have > calculations(like sums, etc...) that you want to pre-compute > to speed things up and its easy to refresh. Yes the contractor is using a 'materialized view', I have never heard of that kind of view, is like a parameterized view with computed columns or what? Is the term 'materialized' an Oracle specific term? > see my embedded comments below... and you may want to > question the 'consultant' about his level of experience. I've > never heard of anyone using the term 'stale'. > > > > From: "Wolfe Stephen S GS-11 6 MDSS/SGSI" > > <[EMAIL PROTECTED]> > > Date: 2003/08/12 Tue AM 09:39:36 EDT > > To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> > > Subject: Question on views > > > > I just had a contractor tell me that the problem with my Diabetic > > detection and Listing 'feature' in their product > (Integrated Clinical > > Database, ICDB) is because the > > 'view' crafted for that detection is going 'stale'. > > > << has your logic changed?>> No, the view should return columns (existing and computed) of static data residing across three tables. > > > I admit that most my SQL design experience is in MSSQL's T-SQL > > although I'm starting to come up to speed on SQL*Plus, anyway, the > > above explanation provided to be from the TriCare guy seems bogus. > > > > Simply put there are four or five good Lab Chemistry parameters one > > could use in a SQL select statement to determine if a patient is > > diabetic or a diabetic candidate without having specific ICD9 > > diagnosis coding that declares the patient diabetic. > > > > A select statement returns a cursor of data that meets the > selection > > criteria and on MSSQL is a static snapshot of what is in > the database > > at the time the query was executed. Thus, if a patient had > parameters > > that > > << same thing happens in Oracle. Oracle uses rollbacks to > achieve this, SQL Server locks the rows. Has the same effect > in answering the question>> Understood. > > met diabetic conditions stored in the database over the > past year, how > > can a view go 'stale'? Is this just a Oracle peculiarity or am I > > getting a smoke screen as I suspect? > > > << In oracle a standard view is a select statement. what is > the background of this 'consultant'. Is he a vendor specific > guy or is he an oracle guy? > > what does he mean by 'stale'? Its hard to judge what your > asking. There is too much functional information in your > question. Since Im not familiar with your system its hard for > me to follow. I have never heard of the term 'stale' either ... I think they are just trying to buy time to fix the problem and I keep bugging them with the 'how' type of questions. Thanks, your response has been helpful. > > > v/r > > > > Stephen S. Wolfe, GS-11, DAFC > > Data Services Manager > > [EMAIL PROTECTED] > > (813) 827-9974 DSN 651-9974 > > -- -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Wolfe Stephen S GS-11 6 MDSS/SGSI INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
