Quiz 1Z0-771 - Oracle APEX Cloud Developer Professional–Professional Latest Test Discount
Quiz 1Z0-771 - Oracle APEX Cloud Developer Professional–Professional Latest Test Discount
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Oracle APEX Cloud Developer Professional Sample Questions (Q53-Q58):
NEW QUESTION # 53
You must create a single master detail page where users can select a row in the master region and see the corresponding details in the detail region. Users must also interact with the master or the detail without leaving the page. Which type of master detail implementation should you use?
- A. Stacked
- B. Drill Down
- C. Side by Side
Answer: C
Explanation:
Master-detail pages in APEX link a master dataset (e.g., list of orders) to its details (e.g., order items). The requirements demand:
C . Side by Side: This layout places the master region (e.g., an Interactive Report) and detail region (e.g., a Form or Grid) horizontally on the same page. Selecting a master row updates the detail region via AJAX, allowing interaction with both regions without navigation. It's ideal for workflows needing simultaneous visibility (e.g., editing details while browsing masters).
A . Drill Down: Master links to a separate detail page, requiring navigation, which violates the "without leaving the page" condition.
B . Stacked: Master and detail are vertically stacked, but interaction is less fluid than side-by-side due to scrolling, though still on one page. Side-by-side is preferred for its clarity and accessibility.
Pitfall: Ensure the detail region's "Server-side Condition" uses the master's selected key (e.g., P1_ID).
NEW QUESTION # 54
Which statement is true about Theme Styles?
- A. Theme Styles control the layout of a webpage.
- B. When the Is Public attribute is enabled, end users can choose the Theme Style from the runtime environment.
- C. The "Is Current" attribute of a Theme Style depends on the "Read Only" attribute.
Answer: B
Explanation:
Theme Styles define visual themes in APEX:
A . When the Is Public attribute is enabled: Setting "Is Public" to "Yes" in Shared Components > Theme Styles allows runtime selection (e.g., via a dropdown in the app UI), letting users switch between styles (e.g., "Vita" to "Vita - Dark").
B . Control layout: False; layout is managed by templates and regions; Theme Styles handle colors, fonts, etc.
C . "Is Current" depends on "Read Only": False; "Is Current" marks the default style, independent of "Read Only" (which locks editing).
Technical Insight: Public styles require multiple defined styles and a UI component (e.g., Dynamic Action) to expose the switcher.
Use Case: Offering light/dark mode options to users.
Pitfall: Without a switcher, "Is Public" has no visible effect.
NEW QUESTION # 55
Which component of the Push Notifications feature stores the messages that are ready to be sent?
- A. Application
- B. Queue
- C. Subscription
Answer: B
Explanation:
Push Notifications in Oracle APEX enable real-time messaging to users' devices via Progressive Web App (PWA) capabilities. The component responsible for storing messages is:
A . Queue: The Push Notification Queue (managed internally by APEX and accessible via APIs like APEX_PWA.PUSH_QUEUE) temporarily holds messages scheduled for delivery. When a notification is created (e.g., via APEX_PWA.SEND), it's added to this queue, awaiting processing by the APEX mail system or an external push service. The queue ensures reliable delivery, even if the user is offline temporarily, as messages are dispatched once connectivity is restored.
B . Application: The application defines the PWA settings and logic but doesn't store messages; it's the container, not the storage mechanism.
C . Subscription: Represents user device registrations (stored in APEX_APPL_PUSH_SUBSCRIPTIONS), not the messages themselves. Subscriptions link devices to the app for delivery, not queuing.
Technical Insight: The queue is a database-backed structure, leveraging Oracle's job scheduling (e.g., DBMS_SCHEDULER) to process entries. For example, calling APEX_PWA.SEND(p_message => 'Promo Alert!') adds an entry to the queue, which is then pushed to subscribed devices.
Use Case: A retail app queues a "Sale starts now!" message for 1,000 users, ensuring orderly delivery without overwhelming the server.
Pitfall: If the queue isn't periodically pushed (e.g., via APEX_PWA.PUSH_QUEUE), messages may delay.
NEW QUESTION # 56
Which three statements are true about Data Workshops in Oracle APEX?
- A. You can load or unload a single table at a time.
- B. You can load data into a new or existing table.
- C. You can unload data from a new or existing table.
- D. You can load or unload multiple tables at a time.
Answer: A,B,C
Explanation:
Data Workshop in SQL Workshop is a powerful tool for importing/exporting table data:
B . You can load or unload a single table at a time: The wizard focuses on one table per operation. For loading, you upload a file (e.g., CSV) and map it to a single table; for unloading, you select one table to export (e.g., EMP to CSV). This granularity ensures precision and simplicity.
C . You can unload data from a new or existing table: Unloading (exporting) works on any table in the schema, whether newly created (e.g., via Quick SQL) or pre-existing (e.g., DEPT). The "Unload" option generates a file (e.g., CSV, JSON) from the table's data.
D . You can load data into a new or existing table: Loading supports creating a new table from the uploaded file (e.g., CSV defines NEW_EMP) or appending/overwriting an existing one (e.g., EMP). The wizard prompts for table creation or selection.
A . You can load or unload multiple tables at a time: False; Data Workshop processes one table per wizard run. Multiple tables require separate operations or custom SQL scripts.
Technical Insight: Loading uses APEX_DATA_LOADING internally, parsing files into rows, while unloading leverages APEX_DATA_EXPORT. For example, uploading emp.csv with "Create New Table" generates a table with inferred columns.
Use Case: Migrating EMP data from a legacy system (CSV) into APEX, then exporting it later for analysis.
Pitfall: Multi-table operations need SQL Scripts or external tools like SQL Developer.
NEW QUESTION # 57
Which API can be used to send Push Notifications immediately in Oracle APEX?
- A. APEX_PWA.PUSH_QUEUE
- B. APEX_PWA.PURGE_QUEUE
- C. APEX_PWA.HAS_PUSH_SUBSCRIPTION
Answer: A
Explanation:
The APEX_PWA package manages Push Notifications:
B . APEX_PWA.PUSH_QUEUE: This procedure forces immediate processing of the Push Notification queue, sending queued messages (added via APEX_PWA.SEND) to subscribed devices without waiting for the default scheduler (e.g., every 5 minutes). Example: APEX_PWA.PUSH_QUEUE; ensures a "Meeting now!" alert goes out instantly.
A . APEX_PWA.HAS_PUSH_SUBSCRIPTION: Checks if a user has an active subscription (returns BOOLEAN), not for sending.
C . APEX_PWA.PURGE_QUEUE: Clears the queue, discarding unsent messages, not sending them.
Technical Insight: PUSH_QUEUE triggers a job to contact the push service (e.g., Firebase), using VAPID keys from the PWA configuration.
Use Case: Urgent alerts (e.g., system outage) need immediate delivery, bypassing delays.
Pitfall: Overuse can strain the server; use judiciously for time-sensitive messages.
NEW QUESTION # 58
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