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Oracle Tips by Burleson |
Publish
and Subscribe
In larger HTML DB systems involving multiple
applications, efficiency will be gained and maintenance will be
reduced by using the publish and subscribe feature. It is common to
create an application that acts as the container for these global
publish and subscribe components. The global application is where all
the components would be defined, and they would act as the source for
any application that wanted to subscribe to them.
The following components can participate in
publish and subscribe:
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Authentication Schemes
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Authorization Schemes
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Templates
-
Lists of Values (LOV)
-
Shortcuts
Publishing
When a component is subscribed to, it becomes the
master. Upon making changes to the master, the developer would then
go into the attributes page for the master component and publish the
changes to the subscribing applications. This will update the
component in all subscribing applications.
Refreshing the
Subscriber
When a component is a subscriber to a master
component, any changes to the master can be updated by navigating to
the attributes page for the component and clicking the Refresh button.
The above book excerpt is from:
Easy HTML-DB
Oracle Application Express
Create Dynamic
Web Pages with OAE
ISBN 0-9761573-1-4
Michael Cunningham & Kent
Crotty
http://www.rampant-books.com/book_2005_2_html_db.htm |
