Oracle Visual Builder: Applications That Outlive Their First Release · Module 2 · The workspace and your first app
Lab briefing · Build it, run it, break it
Lesson 22 of 176 · 3 min
Build the trivial application, then BREAK THE SERVICE CALL THREE WAYS and READ EACH FAILURE IN THE NETWORK TAB. The three failures are chosen because they produce nearly identical symptoms on the page and completely different evidence in the network tab — which is the whole skill this module is teaching. BUILD IT FIRST, PER LESSON 3, AND WATCH IT WORK IN THE NETWORK TAB BEFORE BREAKING ANYTHING. See the request, the response, and the data becoming the table. That healthy baseline is what makes the three failures legible — you cannot recognise a wrong response without having looked at a right one. BREAK IT AT THE URL FIRST. Point the connection at something that does not exist. The page shows an empty table; the network tab shows a request going out and coming back 404. The request was made and refused — and note that the page said nothing…
The full lesson is part of the course
The video, the complete written lesson and the module quiz are included in Oracle Visual Builder: Applications That Outlive Their First Release, with a certificate on completion and a fourteen-day refund window.
In this module: Module 2 · The workspace and your first app
- 1The designer, and the four places you will live
- 2Applications, flows and pages
- 3Your first application, start to finish
- 4Preview, and what it is not
- 5The visual designer and the code behind it
- 6Naming, and why it matters more than it should
- 7The browser tools are your real debugger
- 8What breaks: the first-week mistakes
- 9Lab briefing · Build it, run it, break it