Beginning Oracle Application Express 4.2, 2nd Edition by Doug Gault, Karen Cannell, Patrick Cimolini, Martin Giffy

By Doug Gault, Karen Cannell, Patrick Cimolini, Martin Giffy D'Souz

Starting Oracle program exhibit 4.2 introduces model 4.2 of the preferred and effective Oracle software exhibit improvement platform. known as APEX for brief, the platform permits speedy and simple improvement of web-based purposes that make complete use of Oracle Database. the discharge of APEX 4.2 brings large new Flash and HTML five charting services, more desirable topics for cellular functions usable from telephones and pills, RESTful internet prone help, greater software packaging, and the numerous redesigned wizards provide a brand new and clean consider to the person interface.

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You set up and modify UI Defaults in a later chapter so you can see for yourself how design decisions affect the way UI Defaults are set up. info Chapter 3 ■ Identifying the Problem and Designing the Solution APEX and Primary Keys APEX is set up to make the best use of sequence-based surrogate primary keys of no more than two columns. Although you can still use APEX on table structures that use multicolumn natural keys, it’s far easier and you get much more out of the box if you give APEX what it likes.

Let’s get started: 1. Log into your APEX workspace. You’re presented with the workspace’s Home page, which, unless you’ve been doing other work in this workspace, probably looks a little sparse. 2. Using the tabbed navigation bar across the top of the Home page, pull down the SQL Workshop submenu by clicking the arrow on the right side of the tab (see Figure 4-1). Figure 4-1. info Chapter 4 ■ SQL Workshop 3. Click the Object Browser option. 4. In the Object Browser, click the Create button in the upper-right corner and select Table from the drop-down menu.

Creating a database application from a spreadsheet is a fast and easy way to get from a single-page spreadsheet to a working online application that can be expanded with additional tools and functionality. Figure 5-9. The application pages from a spreadsheet application Database Applications from Scratch When you create a database application from scratch, the wizard offers many interesting options. You can create any number of pages and link pages to different tables of data. Additional steps give advanced options that, when planned for, are very powerful.

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