Oracle Visual Builder: Applications That Outlive Their First Release · Module 5 · Data: business objects and external services
Lab briefing · Two sources, one screen
Lesson 54 of 176 · 3 min
Build a page that reads from A BUSINESS OBJECT AND AN EXTERNAL SERVICE TOGETHER, and DECIDE WHAT HAPPENS WHEN ONE OF THEM IS UNAVAILABLE. Two sources on one screen is the realistic shape of almost every application in this estate, and the second half of the brief is the part that is usually skipped. BUILD THE HONEST VERSION: A BUSINESS OBJECT HOLDING SOMETHING FUSION DOES NOT, KEYED TO A FUSION RECORD. A local note or status against a customer, with the customer read live. That is Lesson 2's narrow case, and building it correctly here is what stops you building the copy later. NOTICE THAT THE TWO CALLS ARE INDEPENDENT AND DECIDE WHETHER THEY SHOULD BE SEQUENTIAL. If the local rows are keyed by an id you already have, both can go at once; if you need the Fusion record first, they cannot. That is a real decision about page…
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 5 · Data: business objects and external services
- 1Business objects: your own database
- 2When to keep data here, and when not to
- 3Designing a business object
- 4Object rules and triggers
- 5Importing and exporting data
- 6The endpoints your objects expose
- 7External services: the other half
- 8Reference data and lookups
- 9What breaks: three data failures
- 10Lab briefing · Two sources, one screen