Important Oracle 1Z0-771 Exam Questions

Answer: C

Explanation:

The Map Region in APEX supports spatial data via:

GeoJSON: A JSON-based standard for geographic data (e.g., points, polygons).

SDO_GEOMETRY: Oracle's native spatial data type for storing geometry (e.g., SDO_GEOMETRY(2001, 4326, SDO_POINT_TYPE(-122, 37, NULL), NULL, NULL)).

Latitude/Longitude: Separate columns for lat/long coordinates, mapped to points.

JSON OBJECT: Not a supported geometry type; while JSON can store data, it's not a specific spatial format recognized by the Map Region without GeoJSON structure.

This ensures compatibility with Oracle Spatial and common GIS standards.

Answer: A, D

Explanation:

Faceted search pages in APEX provide dynamic filtering. The true statements are:

Faceted Search supports the ability to filter columns storing multiple values: Facets can handle multi-value columns (e.g., comma-separated lists or JSON arrays) using appropriate SQL (e.g., INSTR or JSON_TABLE), enabling complex filtering scenarios like tags or categories.

Facets map to specific database columns: Each facet is tied to a column in the underlying query (e.g., DEPTNO or JOB), ensuring data-driven filtering.

Multiple charts are not visible in the same region: False; multiple facets can display charts within the same region, depending on settings.

A facet's chart can be seen only in a nonmodal dialog: False; charts can appear inline or in dialogs, configurable via facet attributes.

This functionality makes faceted search ideal for exploratory data analysis.

Answer: C, D

Explanation:

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.

B . Email Template: Email formatting is handled via APEX_MAIL or templates in Shared Components, not as plugins.

Technical Insight: Plugins are created in Shared Components > Plug-ins, requiring PL/SQL for logic, JavaScript/CSS for UI, and a render function. For instance, a Region plugin might use apex_plugin.t_region to define its output.

Use Case: A Process plugin to log audit trails or a Region plugin for a unique data visualization.

Pitfall: Developing plugins requires advanced skills; test thoroughly to avoid runtime errors.

Answer: B, D

Explanation:

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).

Checkbox Group: Used for multi-select options, enabling users to select multiple values from a list (e.g., departments).

Other types like Popup LOV and Date Picker are valid item types in APEX but are not natively supported as facet types in the Faceted Search region. Popup LOV is typically used for single-value selection in forms, and Date Picker is a standalone item type, not a facet-specific UI.

Answer: B, C

Explanation:

Dynamic Actions in APEX enable responsive behavior:

If a client-side condition is defined, the true action will fire when the condition is met: A condition (e.g., this.browserEvent === 'click') ensures the true action (e.g., Show, Hide) executes only when true, enhancing precision in event handling.

You can execute JavaScript code by creating a dynamic action: The 'Execute JavaScript Code' action type allows custom scripts (e.g., alert('Clicked!');), extending functionality beyond declarative options.

Cannot add more true actions: False; multiple true actions can be added post-creation.

No condition, true actions won't fire: False; without a condition, true actions fire unconditionally on the event.

Dynamic Actions are a cornerstone of interactive UIs in APEX.