Explanation
Cards are a page type that display information in a grid layout of tiles. Each card can contain an image, a title, a subtitle, and an optional link. Cards are suitable for presenting summary or overview information in an attractive and compact way1 Verified References: 1: Understanding Page Types, Features, and Settings - Oracle Help Center

Explanation
Universal Theme has many features that make it an ideal user interface for Oracle APEX applications. Three of the key features of Universal Theme are:
Versatile UI Components: Universal Theme provides a rich set of UI components that can be used to create interactive and engaging applications. Some of the UI components include cards, lists, charts, calendars, maps, timelines, accordions, tabs, modals, alerts, and more.
Responsive Design: Universal Theme adapts to different screen sizes and devices using CSS media queries and grid layout. It ensures that the applications look good and work well on any device, from desktops to tablets to smartphones.
Easy Customization: Universal Theme allows developers to customize the appearance and behavior of their applications using template options and theme styles. Template options enable developers to apply different styles to components on a page without writing custom code. Theme styles enable developers to change the overall look and feel of the application by choosing from a variety of pre-built styles or creating their own.

Explanation
You can create two types of card layout in APEX: Float and Grid. Float layout displays cards in a single row that wraps to the next row when the available space is filled. Grid layout displays cards in a fixed number of columns that can be responsive to the screen size1. Vertical and Horizontal are not valid card layout types in APEX.

Explanation
An authorization scheme is a rule that determines if a user is authorized to access a specific component or feature of an application, such as a page, region, button, item, etc. An authorization scheme can be evaluated at different points in time depending on its evaluation point attribute. The valid evaluation points for authorization schemes are:
Never: The authorization scheme is never evaluated and always returns false.
Once per session: The authorization scheme is evaluated only once per user session and caches the result for subsequent requests.
Once per page view: The authorization scheme is evaluated once per page view and caches the result for subsequent requests within the same page view.
On each new page view or partial page refresh: The authorization scheme is evaluated on each new page view or partial page refresh (for example, when using dynamic actions) and caches the result until the next page view or partial page refresh.
On each request (not cached): The authorization scheme is evaluated on each request and does not cache the result. Once per user and Once per page load are not valid evaluation points for authorization schemes. Verified References: [Creating Authorization Schemes - Oracle Help Center], [Authorization Scheme Attributes - Oracle Help Center]

Explanation
Data Workshop is a feature in Oracle APEX that enables you to load and unload data to and from the database.
You can use Data Workshop to copy data between Oracle databases or between an Oracle database and external files. Data copying is accomplished by exporting and importing data, and by unloading and loading data. While migrating apps, once the database objects are created in the target environment, you can load the data using Data Workshop by following these steps:
Access Data Workshop by clicking Utilities and then Data Workshop in SQL Workshop.
Click Load Data.
Select a data source type, such as Text File (CSV), XML File (XML), Copy & Paste (Spreadsheet), or Object Store Reference (Autonomous Database only).
Specify a file name or location for your data source.
Select a table name for your data destination.
Map your data columns to your table columns.
Review your data load settings and click Load Data.