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Library's provide a convenient means of storing client-side program
units and sharing them among multipule applications. Once you create
a library, you can attach it to any other form,menu,or library
modules. When you can call library program units from triggers menu
items commands and user named routine, you write in the modules to
which you have attach the library.
when a library attaches another library ,program units in the first
library can reference program units in the attached library.
Library support dynamic loading-that is library program units
are loaded into an application only when needed. This can
significantly
reduce
the
run-time
memory
requirements
of
an
applications.
111. What is strip sources generate options?
Removes the source code from the library file and generates a library
files that contains only pcode.The resulting file can be used
for final deployment, but can not be subsequently edited in the
designer.
ex. f45gen module=old_lib.pll userid=scott/tiger
strip_source YES output_file
112.What are the vbx controls?
Vbx control provide a simple mehtod of buildig and enhancing
user interfaces.The controls can use to obtain user inputs and
display program outputs.vbx control where originally develop as
extensions for the ms visual basic environments and include such
items as sliders,grides and knobs.
113. What is a timer?
Timer is a "internal time clock" that you can programmatically
create to perform an action each time the timer expires.
114. What are built-ins associated with timers?
find_timer
create_timer
delete_timer
115. what are difference between post database commit and post-form
commit?
Post-form commit fires once during the post and commit
transactions process, after the database commit occures. The post-
form-commit trigger fires after inserts,updates and deletes have
been posted to the database but before the transactions have been
finalished in the issuing the command.The post-database-commit
trigger fires after oracle forms issues the commit to finalished
transactions.
116. What is a difference between pre-select and pre-query?
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