Pass the Oracle Application Development 1z0-771 Questions and answers with ExamsMirror

Key truths about Oracle APEX:

APEX eliminates middle tier application logic: APEX runs entirely within the Oracle Database, using PL/SQL and SQL for logic, bypassing traditional middle-tier servers (e.g., Java EE). This simplifies architecture and boosts performance.

You can build interactive reporting apps based on data from disparate systems: Via REST Data Sources, database links, or ORDS, APEX integrates data from external systems, enabling unified reporting (e.g., combining on-premises and cloud data).

Needs client software: False; APEX is web-based, requiring only a browser.

Validation errors in APEX default to both inline (next to the item) and notification (top of page):

C. Setting Display Location to Inline in Notification: In the validation’s properties, changing "Display Location" to "Inline in Notification" ensures the error appears only in the notification area, suppressing inline display. This centralizes feedback for a cleaner UI.

A. Removing Associated Item: Breaks the validation’s link to P1_SALARY, stopping it entirely.

Plugins extend APEX’s functionality beyond built-in components:

C. Process: A Process plugin executes custom server-side logic (e.g., PL/SQL) during page processing or AJAX calls. Example: A plugin to sync data with an external API after form submission. It’s defined with execution points and parameters.

D. Region: A Region plugin creates custom UI areas (e.g., a dynamic chart or carousel). Example: A plugin rendering a custom dashboard. It supports attributes, templates, and refresh events.

A. Validation: While validations are customizable, they’re not a plugin type; they’re declarative or PL/SQL-based within APEX.

To use REST-enabled SQL in APEX:

Install ORDS 19.x or later: Oracle REST Data Services (ORDS) must be installed and configured on the remote database.

TheShow AI Assistant Dynamic Actionin Oracle APEX triggers the display of the AI Assistant interface. To customize the first message users see:

Welcome Message: This attribute in the Property Editor defines the initial text displayed when the AI Assistant appears. Setting it to "How may I help you today?" ensures this exact phrase greets users, enhancing user experience by setting a friendly tone. It’s a static, developer-defined string, distinct from AI-generated responses.

Initial Prompt: This attribute defines the starting input or context sent to the AI model, not the visible message shown to users. It’s typically hidden and used to guide the AI’s behavior (e.g., "Act as a support agent").

In Oracle APEX Workflow, onlyone instanceof a workflow can exist in the "In Development" state at a time. This ensures that developers work on a single draft version before publishing it. Multiple instances are allowed in other states (e.g., "Published"), but not during development.

The "Create App using Generative AI" feature in APEX Assistant leverages natural language processing to automate application creation. When invoked:

Create the application blueprint: APEX Assistant generates a foundational structure (blueprint) for the application, including pages, regions, and navigation, based on the user's natural language input (e.g., "Create an app to manage employees"). This blueprint serves as the starting point, which developers can refine.

Add a Dashboard page: The Assistant can interpret requests for specific page types, such as dashboards, and include them in the generated app. Dashboards typically feature charts, summaries, or key metrics, and this is a common task supported by the AI-driven creation process.

Create a Generative AI service: This is not a task performed during app creation; instead, it’s a prerequisite configuration step done separately in the Instance Administration settings.

Logging in APEX tracks runtime activity:

A. apex_automation.log_info: Correctly logs an informational message to the execution log for automation tasks (e.g., workflows). The syntax || :ENAME || concatenates the item value (e.g., "JOHN") into "SAL for JOHN increased by 19." It’s stored in APEX_AUTOMATION_LOG, viewable in Monitoring.

B. apex_debug.info: Logs to debug output, but the syntax is flawed (:ENAME || isn’t concatenated properly; should be 'SAL for ' || :ENAME || ...). It’s valid only when debugging is enabled (e.g., APEX_DEBUG.ENABLE).

APEX Workspaces define development environments tied to database schemas:

A. During workspace creation, you can associate the workspace with an existing database schema: In the Workspace creation wizard (via Instance Administration), you select an existing schema (e.g., "HR") to link, enabling access to its objects. This is a standard step, ensuring immediate usability.

B. New schemas cannot be created during workspace creation: APEX doesn’t provide a UI to create schemas here; schemas must pre-exist in the database, created via SQL (e.g., CREATE USER).

C. A workspace can be associated with only one schema: False; a workspace can associate with multiple schemas post-creation via "Manage Workspace to Schema Assignments."

In Oracle APEX, a faceted search page allows users to filter data using facets, which are displayed as UI components in the Faceted Search region. According to the Oracle APEX documentation, the supported facet item types include:

Range: Used for numeric or date ranges, allowing users to filter data within a specified range (e.g., salary or hire date).