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 software show 4.2 introduces model 4.2 of the preferred and efficient Oracle software exhibit improvement platform. referred to as APEX for brief, the platform allows speedy and simple improvement of web-based purposes that make complete use of Oracle Database. the discharge of APEX 4.2 brings wide new Flash and HTML five charting functions, superior topics for cellular functions usable from telephones and capsules, RESTful internet prone aid, more desirable software packaging, and the various redesigned wizards supply a brand new and clean consider to the consumer interface.

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Figure 4-9. Data Load and Unload methods provided by the Data Workshop utility Although three separate options are presented, the Text Data and Spreadsheet Data options actually use the same Data Load Wizard. There is little or no discernible difference in the actions of the wizard regardless of which option you select. The third option (XML Data) allows you to load data that has been exported in Oracle’s proprietary XML Data Transport format. The format looks like this: 2 DOUG A69856770A9AB9CBB0479573FCB3E2A5 3 DAVID E2E89134B8AC6E1FFC14139A6FB2C10B In your imaginary company, the help-desk technicians have been using Microsoft Excel to track tickets, so you’re going to load the data using the Spreadsheet Data option.

Business Logic vs. User Interface Logic Because it’s written in PL/SQL, APEX takes full advantage of everything that PL/SQL has to offer. The APEX development team has made thorough use of stored PL/SQL program units for their business logic, and you can take a very important lesson from them. Although it’s arguably a valid development method to prototype your business logic by first coding it as an anonymous PL/SQL block inside of APEX, it’s foolish to leave it there long term. By moving it out into stored program units, you gain in many different ways.

Info Chapter 5 ■ Applications and Navigation Figure 5-4. 2. 2 are hardened and can be used in production environments. The filters at the top of the page allow you to narrow the applications you see by type and by whether the application is already installed. Figure 5-5. List of packaged applications Selecting an application from the list takes you to an informational page about the application, providing a description, version, and other details about minimum requirements. To install the application, simply click the Install Application button and follow the default prompts.

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