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最新的 Application Development 1Z0-771 免費考試真題 (Q47-Q52):

問題 #47
Which statement is true about the Data Workshop utility?

A. You can load or unload multiple tables at a time.
B. You cannot load data from an XLSX file with multiple worksheets.
C. The wizards load and unload table data only.
D. The wizards load and unload all types of schema objects.

答案：C

解題說明：
The Data Workshop utility in APEX is designed to load and unload table data only, not other schema objects like procedures or views. Option A is false because XLSX files with multiple worksheets are supported (each worksheet can be mapped to a table). Option B is incorrect as it's limited to table data. Option D is partially true but not the most precise answer, as "multiple tables at a time" depends on the process, whereas C is universally accurate.

問題 #48
What are two reasons to enable the "Used by App Builder" option while creating a Generative AI Server?

A. To author SQL powered by Generative AI
B. To create a REST-enabled database object
C. To build applications using natural language powered by Generative AI
D. To create a Working Copy of your application

答案：A,C

解題說明：
Enabling "Used by App Builder" for a Generative AI Server allows:
Author SQL powered by Generative AI: Integrates AI-driven SQL generation in App Builder.
Build applications using natural language: Enables natural language prompts to create app components.
Options A and B are unrelated to this setting, as it's specific to AI integration in App Builder.

問題 #49
Which is NOT an available Geometry Column data type for the map region?

A. JSON OBJECT
B. SDO_GEOMETRY
C. Latitude/Longitude
D. GeoJSON

答案：A

解題說明：
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.

問題 #50
Which API can be used to send Push Notifications immediately in Oracle APEX?

A. APEX_PWA.PUSH_QUEUE
B. APEX_PWA.HAS_PUSH_SUBSCRIPTION
C. APEX_PWA.PURGE_QUEUE

答案：A

解題說明：
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.

問題 #51
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 unload data from a new or existing table.
C. You can load or unload multiple tables at a time.
D. You can load data into a new or existing table.

答案：A,B,D

解題說明：
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.

問題 #52
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