Application Express (APEX) (need help!)

Hello, everyone!
Several days ago, I posted a question on the creation of a small project.
Here are the details:

-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Let's say we have a server (server 'A', for example), it will connect via browser. When connected, we see a simple menu:
a "textbox".
an ok"" button.

Then, when we type something like a 'personID' in a 'text box' and press 'ok' (or we don't have any other buttons... we just type in this)
('personID' and press Enter..), Server "A" sends the request to the servers 'B', 'C', 'D',..., 'Z',... the main goal is to check whether this 'person' exists in databases on
These servers.

After this procedure, data for this 'person' are in XML format and is sent to our server "A" (ONLY if there is something to go back).

And finally, we see the 'answer' to our 'request' to right below our "textbox".

Example:

All of our servers 'are some faculties '. Send us a request to other servers, namely that a student is enrolled in more than one faculty. We do NOT check the Faculty server 'A' (suppose that this student is already enrolled in this school, so there is no need to check). So, we "ask" and get the answer to this, for example:

"name: John Smith.
"id: xxxxxx".

"Option B".
«Years: 2009-2010»

"School C".
"Years: 2007-2010.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
The main problem for me was the understanding from where I should go. I was given a Council:
Use APEX as a tool to create GUIS, a plsql db, to create tables, triggers, scripts and so forth... and XMLElement, XMLForest, XMLAgg to collect data of
database and put it into XML for later use with APEX.

I managed to install and configure the APEX. I myself in tons of manuals. On everything in my work.
And now I'm stuck with few questions in my mind.

(1) how to create a simple interface to work with APEX? Where should I start?
(2) I have already created a database, with tables and data (in 11 g "Developer Oracle sql"), but I have not found how to APEX 'See' everything... not to mention how to get the data in tables as XML, then with APEX...

Can someone help me with these questions? Maybe some tricks, tips, examples... ?

Time is short for me now, so...
I would be very grateful for any kind help...

I agree with Acadet's comments... You must understand the features of Oracle technology... In your case, "user9x", your main goal is to be able to access data from different data sources for 'Oracle '... With or without Apex, today Oracle already supports this notion of access to data distributed via the 'data links' approach... First of all, you have access to all your data on a single system (your goal of the main activity), then you choose the tool to present these data - Apex 3.x, Cloud-9 tomorrow! :)

good luck trying to make by using XML as the whole point of the Apex is RAPID application development without leaving the architect/developer care about the nuts and bolts of the presentation layer (I think, but I can be challenged on this notion).

Best,

Shra1

Tags: Database

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