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Oracle Application Express

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ItemDescription
COM Component Object Model. A binary standard that enables objects to interact with other objects, regardless of the programming language in which each object was written.
CSS Optionally in APEX you may need to deploy Cascading Style Sheets (CSS).
CSV The comma-separated values (or CSV) file format is a delimited data format which has fields separated by the comma character and records separated by the newline character.
Clearing Session State You can clear the cached value for specific items, all items on a page, all pages in an application, or the current user session. Clearing a cached value resets the value to null.
Client A piece of software which accesses services from another piece of software (a server), often remotely over a computer network.
Comments Use this attribute to record developer comments about the current page. These comments never display when the application is running.
Component Reuse 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.
Computations You can use computations to assign a value to an identified item when a page is submitted or displayed.
Computations are units of logic used to assign session state to items and are executed at the time the page is processed.
Condition A condition is a small unit of logic that helps you control the display of regions, items, buttons, and tabs as well as the execution of processes, computations, and validations.
For example, when you apply a condition to a button, the APEX rendering engine evaluates the condition during the rendering (or Show Page) process.
Whether the condition passes or fails determines if the page control (such as a button) displays.
You specify a condition by selecting a condition type when you create the control or component (for example, the region, item, button, or tab) or by making a selection from the Condition Type attribute.
Depending upon the Condition Type you select, enter the appropriate values in the Expressions fields. The condition evaluates to true or false based on the values you enter in the Expression fields.
Cookie The Application Express engine establishes the identity (or anonymity) of the user for each page request and the session ID to fetch session state from the database.
The visible location of the session ID is in the URL for a page request. Another visible location is in the page's HTML POST data and indirectly in the contents of a session cookie.
This cookie is sent by the Application Express engine during authentication and is maintained for the life of the application (or browser) session.
Cross Site Scripting Cross site scripting, sometimes called XSS, is a security breach that takes advantage of dynamically generated Web pages.
To protect against these attacks, filter all user input for unexpected characters and malformed input and filter all output to the browser to prevent content from being unintentionally rendered as HTML or script.
Application Express provides numerous wizards that create application components which, in themselves do not expose the application to these security issues.
Cursor Focus Select whether or not you want the cursor focus to be placed in the first field on the page.
Customizing Home Page You can control what regions display on the Database Home Page by clicking the Customize link in the upper right corner of the page. By default, both the Links list and Usage Monitor appear.

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