When you create an Access Control Page using the Create Page Wizard, three of the following Access Roles get created: Reader, Administrator, and Contributor.These roles are predefined by APEX and correspond to the authorization schemes that control the access to the application, pages, or page components1. Reader role grants read-only access to the application. Administrator role grants full access to the application, including administrative and edit privileges.Contributor role grants edit privileges to the application, but not administrative privileges2. Developer role is not a default Access Role created by the wizard, but you can create your own custom roles and assign them to users on the Application Access Control page.

From SQL Workshop, you can perform the following actions:

Run SQL commands and scripts: You can use SQL Commands or SQL Scripts components to run individual SQL statements or PL/SQL blocks interactively or in batch mode. You can also view the results, errors, or explain plans of your commands or scripts.

Create and view database objects: You can use Object Browser component to view and manage the database objects in your schema, such as tables, views, indexes, etc. You can also use this component to create new objects, modify existing objects, drop objects, or run object reports.

The other options are incorrect because:

Create an APEX user: You cannot use SQL Workshop to create an APEX user. You can use Workspace Administration component to create and manage users in your workspace.

Delete database: You cannot use SQL Workshop to delete database. You can only delete database objects such as tables or views from your schema.

Verified References: [About SQL Workshop] [Using SQL Commands] [Using SQL Scripts] [Using Object Browser] [Managing Workspace Users]

A plugin is a component that extends the native functionality of Oracle APEX by allowing developers to create custom components using SQL, PL/SQL, HTML, CSS, and JavaScript. A plugin can be created for any of the following component types: Dynamic Action, Item, Process, Region, Report Layout, Authentication Scheme, Authorization Scheme, or Data Load Method. A process plugin is a custom process type that can be executed when a page is submitted or loaded. A region plugin is a custom region type that can display data or content on a page. Verified References: [Creating Plugins - Oracle Help Center], [Plugin Concepts - Oracle Help Center]

When a table or a SQL query returns many rows, an interactive grid is best displayed to the user with pagination.Pagination enables users to navigate through large data sets by displaying a subset of data at a time3.The two types of pagination available for interactive grids are Page and Scroll3. Page pagination displays a fixed number of rows per page and provides controls to navigate between pages.Scroll pagination displays rows as the user scrolls down the grid and fetches more data as needed

Open Door Credentials is an authentication scheme that allows anyone to access your application using a built-in login page that captures a user name. You can use this scheme for testing purposes or for applications that do not require secure authentication. You can select this scheme from the Authentication Type list when creating or editing an authentication scheme. References: [Understanding Authentication] and [Creating an Authentication Scheme]