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That is a very good point, actually: a database transaction should either work without errors, or not at all. That said, the OP implies that the 'performant' solution he has in mind would not be 'accurate', i. e. contain errors, i. e. needs to be rolled back, achieving nothing at all! Why again did he ask? 
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Stefan_Lang wrote: i. e. needs to be rolled back, achieving nothing at all!
Maybe he is thinking about running seperate updates on individual tables rather than using proper transaction processing. That is only speculation on my part. He may have something totally different in mind.
Stefan_Lang wrote: Why again did he ask?
I don't know. He seems to not like taking the time to insure accuracy of the process. 
The report of my death was an exaggeration - Mark Twain
Simply Elegant Designs JimmyRopes Designs
I'm on-line therefore I am.
JimmyRopes
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I call bullshit, I don't know how his job is done, why should I expect him to know mine. The client has the privilege of pay the bill and requesting the solution, the detail are not his concern.
Never underestimate the power of human stupidity
RAH
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I run into performance issues all the time. These are not easy to fix and sometimes it means looking at your design critically and throw it overboard. That's not something you can sell to customers. When you're lucky it's a matter of adding some indexes to your database, but sometimes you just have to face the fact that further performance optimization is not possible unless you spend days, or even weeks, working on a single issue. For our customers the costs that come with such tasks far outweigh the benefits that come with it (a form might load a few seconds faster).
Accuracy should always be your most important objective. If your results are inaccurate they are useless and if the data is useless performance is not an issue either. Inaccurate data is still inaccurate at the speed of light.
It's an OO world.
public class SanderRossel : Lazy<Person>
{
public void DoWork()
{
throw new NotSupportedException();
}
}
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1st law of optimization: Don't do it!
2nd law of optimization: If you HAVE TO do, it don't do it yet!
(To me, it sounds as if the 2nd law is not appliccable in your case)
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Accuracy is the only thing that matters until the client starts worrying about performance. In your case that seems to be clearly not the case so why are you worrying about it?
For any algorithm there is a minimum time that it will take, and while you never know what that time is or manage to get particularly close to it, optimisation attempts do often hit a wall where any further increase in performance is not worth the effort. If you've done the quick wins (batching data at an appropriate size, indexing your tables on the right columns, using fast text writing) then you are almost certainly against that wall.
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Probably something you already considered but which can have an enormous impact in loading your data: transactions. Grouping as much data together before committing can increase loading performance to a factor 100 (as usual, experiment with size of transaction for best result in your situation).
Timing of the process is also extremely important: you might experience slow performance due to locking issues.
To me, accuracy seems the most important criterium (inaccurate = wrong).
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You can have it
- Correctly Done
- Quickly Done
- Cheaply Done
Pick no more than 2
I think your client understands this.
To err is human to really mess up you need a computer
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No CP icon for the Revenge of the 5th!?
I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)
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Perhaps because we are not in the month of "Revenge" . It actually feels feels more like "Helluary"  .
Soren Madsen
"When you don't know what you're doing it's best to do it quickly" - Jase #DuckDynasty
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Where? I didn't see it!
I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)
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Yesterday I saw that(Indian time on 4th May). Bob as Darth vader.
I think they should maintain a history for Bob logos.
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That's the 'May the 4th be with you' icon, but today is the 'Revenge of the 5th'!!!
I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)
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Kornfeld Eliyahu Peter wrote: but today is the 'Revenge of the 5th'!!!
I think they didn't make new logo because .... see 10th option[^] there. And yeah they missed that option on recent surveys.
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I saw this on the local news tonight: Man shot by neighbor drunk, confused[^]
It seemed familiar, so please forgive me for digging up a bad Soapbox joke[^] - perhaps he is a modern day Nostradamus 
Soren Madsen
"When you don't know what you're doing it's best to do it quickly" - Jase #DuckDynasty
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You Said: so please forgive me for digging up a bad Soapbox joke
No way. I can't forgive you.
But don't worry too much as I wouldn't forgive anyone else that dug that up either.
"Rock journalism is people who can't write interviewing people who can't talk for people who can't read." Frank Zappa 1980
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Sorry dude. I realize that...contribution is a bit raw 
Soren Madsen
"When you don't know what you're doing it's best to do it quickly" - Jase #DuckDynasty
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can someone explain me why code project have changed the logo with a title may the 4th be with you. anything special about 4th may?
Ravi Khoda
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If you don't know who Darth Vader is, then I don't think anyone can explain to you anything about Star Wars. 
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It is way older than Star Wars - we were coding in Forth in the early 80s.
I even remember a much older, classical text which doesn't only prescribe the programming language, but even the operations to be performed: It told us "Go Forth, and Multiply!"
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You've never seen "Star Wars", have you?
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nope i have not seen star wars 
Ravi Khoda
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"May the Force* be with you" is a Signature Line from Star Wars, in which it is said by many characters when parting (much like we might say "farewell" or "goodbye").
Fans have decided that the fourth of May should be international Star Wars day, mainly so that they have an excuse to use the punny line "May the 4th be with you."
* Force: 'An omnipresent energy that can be harnessed by those with that ability, known as Force-sensitives. It is described in the first produced film as "an energy field created by all living things [that] surrounds us, penetrates us, [and] binds the galaxy together."'
What is this talk of release? I do not release software. My software escapes leaving a bloody trail of designers and quality assurance people in its wake.
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Really!? I hope so for your sake, the emperor is not as forgiving as I am.
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