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Frank D. Greco
 
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Default Emitting real-time events from database? - 08-31-2009 , 01:25 PM






Are there hooks to most modern databases to allow database events to trigger
events or stream data that can be received by Java/C or other languages?

Back in the early/mid 90's Sybase had Open Server which allowed some C-language
integration, but it never really delivered what large enterprises (esp in
financial services companies) needed.

Any pointers are greatly appreciated.

F

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Ed Prochak
 
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Default Re: Emitting real-time events from database? - 08-31-2009 , 04:31 PM






On Aug 31, 2:25*pm, Frank D. Greco <fgr...@REMOVECrossroadsTechNOSPAM-
FOOBAR.c00m> wrote:
Quote:
Are there hooks to most modern databases to allow database events to trigger
events or stream data that can be received by Java/C or other languages?

Back in the early/mid 90's Sybase had Open Server which allowed some C-language
integration, but it never really delivered what large enterprises (esp in
financial services companies) needed.

Any pointers are greatly appreciated.

F
Define your "real time" requirement. Do you need millisecond response?
Microsecond? or is a 1minute refresh rate satisfactory?

People sometimes use real time as a jargon phrase without knowing its
meaning. They usually mean "as fast as possible" which is not a well
defined requirement.

Ed

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Robert Klemme
 
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Default Re: Emitting real-time events from database? - 09-01-2009 , 12:57 AM



On 31.08.2009 23:31, Ed Prochak wrote:
Quote:
On Aug 31, 2:25 pm, Frank D. Greco <fgr...@REMOVECrossroadsTechNOSPAM-
FOOBAR.c00m> wrote:
Are there hooks to most modern databases to allow database events to trigger
events or stream data that can be received by Java/C or other languages?

Back in the early/mid 90's Sybase had Open Server which allowed some C-language
integration, but it never really delivered what large enterprises (esp in
financial services companies) needed.

Define your "real time" requirement. Do you need millisecond response?
Microsecond? or is a 1minute refresh rate satisfactory?

People sometimes use real time as a jargon phrase without knowing its
meaning. They usually mean "as fast as possible" which is not a well
defined requirement.
I second that. Here's the definition:

http://en.wikipedia.org/wiki/Real-ti...l-time_systems

Frank, what is is that you want to do?

Cheers

robert

--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

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