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Message Queues--Data Tier?

Chintan B Shah
Ranch Hand

Joined: Sep 23, 2008
Posts: 83
Hi all,

On SCJA Certification guide by Mr. Cameron McKenzie(Page 24, 2nd edition)the diagram represents Message Queues in data-tier. I would like to know how Message Queues fit in data-tier. Wouldn't JMS messages fit in middle-tier?

Thanks in advance.

Regards,
Chintan.


SCJA 1.0
Martijn Verburg
author
Bartender

Joined: Jun 24, 2003
Posts: 3274
    
    5

I guess it depends if you are using JMS as a data store of sorts . I personally do see it as being part of a middle tier messaging/transport layer but I guess YMMV.


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Chintan B Shah
Ranch Hand

Joined: Sep 23, 2008
Posts: 83
Thanks for reply.

So, in case question is posed in exam for "where does message queues reside", what will be the appropriate answer
data-tier or middle-tier?(considering the fact that we don't have option for "Depends" and "Both")

Regards,
Chintan.
Chintan B Shah
Ranch Hand

Joined: Sep 23, 2008
Posts: 83
Thanks for reply.

So, in case question is posed in exam for "where does message queues reside", what will be the appropriate answer
data-tier or middle-tier?(considering the fact that we don't have option for "Depends" and "Both")

Regards,
Chintan.
Martijn Verburg
author
Bartender

Joined: Jun 24, 2003
Posts: 3274
    
    5

I think it's best for someone else who's been through the exam to answer this one (as the exam maybe looking for a particular answer that is different to the 'real world') .
Chintan B Shah
Ranch Hand

Joined: Sep 23, 2008
Posts: 83
Thank you Martijn for your input.

Regards,
Chintan.
 
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