By Doug Gault
Beginning Oracle software convey 4.2 introduces model 4.2 of the preferred and effective Oracle program show improvement platform. referred to as APEX for brief, the platform permits fast and straightforward improvement of web-based purposes that make complete use of Oracle Database. the discharge of APEX 4.2 brings vast new Flash and HTML five charting services, improved topics for cellular functions usable from telephones and drugs, RESTful net providers help, greater software packaging, and the various redesigned wizards supply a brand new and clean consider to the person interface.
even if you are new to Oracle or an previous hand who is but to check the waters of APEX, Beginning Oracle program exhibit 4.2 introduces the tactics and top practices you have to to turn into expert with APEX. The e-book exhibits off the programming atmosphere, the utilities and instruments to be had, after which keeps by means of jogging in the course of the strategy of construction a operating method from the floor up. All code is documented and defined in order that these new to the languages are usually not misplaced. After analyzing this booklet, energy clients and programmers alike can speedy prepare strong and scalable functions to be used by means of one individual, via a division, by means of a complete corporation.
- Covers brand-new performance in APEX 4.2
- Provides absolutely documented and defined instance code
- Guides you thru making a operating and entirely deployable software
Read Online or Download Beginning Oracle Application Express 4.2 PDF
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Extra resources for Beginning Oracle Application Express 4.2
If you run out of empty rows to enter columns into, you can click the Add Column button to add a new empty column definition row to the form. Figure 4-2. Defining the table and its columns 5. Enter the details for the TICKETS table as indicated in the ERD from the end of Chapter 3 and in Figure 4-2. Then click Next. The next page (Figure 4-3) lets you choose how you would like the primary key to be populated and which column to use as the primary key. The four options for primary key are fairly self-explanatory, but the two in the middle are probably the most common.
To include a table in your select statement, simply click it in the list to the left. A representation of the table is placed in the blank region of the screen above the Conditions region. You may add as many tables as you like to your query and may even include the same table more than once by clicking it again. Notice that if you include more than one instance of the same table, the new instance is suffixed with a sequence number differentiating it from the original table. Figure 2-19 shows an example graphical representation for the DEMO_ORDERS table and outlines the different interactive features.
The benefit of using table APIs instead of accessing the table directly is that any required validation logic can be included once, in the API, and accessed from various alternate interfaces including APEX. User Interface Defaults allow you to define default display attributes to APEX regions and items. The utility lets you manage these UI defaults at two different levels: Table Dictionary and Attribute Dictionary. UI Defaults are discussed in more detail later. About Database and Database Monitor are special utilities that require the user running them to have access to a database login that has been granted the DBA role.