Table structure?

[Joakim Schramm]

Yes that was what I was thinking. By the way, I like your way of replying
separating out each question to email. Very practical!

Joakim 

> -----Original Message-----
> From: valentina-bounces at lists.macserve.net 
> [mailto:valentina-bounces at lists.macserve.net] On Behalf Of 
> Ruslan Zasukhin
> Sent: 28 April 2006 22:01
> To: valentina at lists.macserve.net
> Subject: Re: Table structure?
> 
> On 4/28/06 8:10 PM, "Joakim Schramm" <joakim at astrocalc.com> wrote:
> 
> > The lookup data is really sort of a DateTime value in 16 character 
> > string where each DT has a result value in a second field, were DT 
> > mark a boundury to set a value. I was thinking of using 
> IVDateTime but 
> > the examples in the docs (at least VCOM) are really sparse 
> so not sure 
> > if this would do? Instead of just a single line or two 
> shoing how to 
> > asign and read a value, it would be really bice (and 
> helpful) if the 
> > was at least a small piece of code showing a typical 
> context to use it 
> > together with other calls. It exists in a few places, but 
> far to few. 
> > I know, you are probably aware of it, but ponting it out 
> anyway. The 
> > documentation is also a bit contradictional on this, while the VCOM 
> > doc show you can set date format, kernel doc say it's depends on 
> > system settings (internal storage), what matter to me of 
> course is what I get when need to use this value in my other code?
> > 
> > Just to give as an example, my data looks something like 
> this with | 
> > as field separator
> > 
> > 19971026030000|-1
> > 19980329020000|-2
> > 19981025030000|-1
> > 19990328020000|-2
> > 19991031030000|-1
> > 20000326020000|-2
> > 20001029030000|-1
> > 
> > Lets say if I make a lookup using the value 19990429073000 
> (29 April 
> > 1999
> > 07:30:00) it will return me -2 as it's more then 19990328020000 but 
> > not as much as 19991031030000, but it's really not the 
> comparison I am 
> > after here but the best way to structure the data.
> 
> Of course you can store this DateTime values into VCOM 
> IVDateTime type.
> 
> You even will win in db size and therefore in speed.
> 
> Now you spend 16 + 1 bytes per value.
> With DateTime field of Valentina you will use 8 bytes.
>     so you win about 4MB in table,
>     and about 6 MB in the index file if it exists
> 
> 
> --
> Best regards,
> 
> Ruslan Zasukhin
> VP Engineering and New Technology
> Paradigma Software, Inc
> 
> Valentina - Joining Worlds of Information http://www.paradigmasoft.com
> 
> [I feel the need: the need for speed]
> 
> 
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