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Oracle Application Express

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PGA Program Global Area
PKI Public Key Infrastructure. The basis for managing public keys used to provide encryption.
PL/SQL PL/SQL is Oracle's proprietary extension to the SQL language. PL/SQL adds procedural and other constructs to SQL that make it suitable for writing applications.
PL/SQL Expression (Condition) Use PL/SQL Expression to specify an expression in valid PL/SQL syntax that evaluates to true or false.
For example:
If the value of :MY_ITEM is Yes, then the condition evaluates as true. Otherwise, it evaluates as false.
Page A page is the basic building block of an application. When you build an application in Application Builder, you create pages that contain user interface elements, such as tabs, lists, buttons, items, and regions.
Page 0 If a page component such as a region with static HTML or a list must appear on multiple pages in your application, consider using page 0.
Page 0 is a page in your application that will never be run directly by the end user but whose components are considered for rendering by the engine on every page view.
Components placed on page 0 can selectively be excluded from other pages using conditions.
Page Computations Use page computations to assign a value to an identified item when a page is submitted or displayed. You can also use application-level computations to assign values to items.
Create a page computation by running the Create Page Computation Wizard. For each computation, specify the item for which you are creating the computation as well as a computation type.
Page Process You create a process by running the Create Process Wizard. During the wizard, you define a process name, specify a sequence, the point at which process will execute, and select a process category.
Page Rendering Show Page is the APEX page rendering process. It assembles all the page attributes (including regions, items, and buttons) into a viewable HTML page.
Pagination Reports created in Application Express can automatically provide pagination through a result set. A result set of, say, 5,000 rows can be divided in to pages of 25 rows each.
Different styles of pagination exist, some using just Next and Previous links and numbers indicating the currently displayed row ranges. Others allowing the user to jump to a specific range of rows.
When it is not a requirement for the user to know exactly how many rows there are in a result set, use a pagination style that does not compute the result set size up front. This can improve performance.
Portal Groups of Web pages that host many different types of content that come from many different sources.
Portlet Reusable information components that summarize or provide access to different types of information sources.
Primary Key Primary key is a value that can be used to identify a unique row in a table.
This form wizard and the automated DML process that it generates will use a database trigger and a sequence to populate the primary key column.
Printer Friendly This designates that, when selected, this option will direct the contents to the printer friendly version of the destination page.
Processes Processes are logic controls used to execute data manipulation language (DML) or PL/SQL.
For example, you can use a process to populate session state at the time a page is rendered, to execute some type of logic (for example, using PL/SQL), or to make a call to the rendering engine.
Typically a process performs an action. A process may be hand coded PL/SQL, or the invocation of a predefined process.
Processing Controls Use the Page Processing section of the Page Definition to specify application logic such as computations, validations, processes, and branches.
In general, the Application Express engine runs this logic in the order it appears on the Page Definition.
Proxy Server Use this field to specify a proxy server in the Application Definition Attributes.
If you use a firewall and the target of a URL is outside the firewall relative to Application Builder, you may need to specify a proxy server.

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