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The Column Heading menu of an Interactive Report provides various options to customize the report based on the selected column. The options include:

• Control Break: This option allows you to create a control break on the column, which groups the rows by the column values and inserts a header and a footer for each group. You can also apply aggregate functions, such as sum, count, or average, to the footer of each group.
• Hide: This option allows you to hide the column from the report, which reduces the clutter and improves the readability of the report. You can also show the hidden columns by using the Columns option in the Actions menu.

The other options are incorrect because:

• Group By: This option is not provided in the Column Heading menu of an Interactive Report. It is provided in the Actions menu of an Interactive Report. It allows you to group the rows by one or more columns and display the result in a chart or a pivot table.
• Delete: This option is not provided in the Column Heading menu of an Interactive Report. It is provided in the Data option in the Actions menu of an Interactive Report. It allows you to delete one or more rows from the report and the underlying table.

Verified References: [Customizing Interactive Reports] [Column Heading Menu]

 In Oracle APEX, you can choose from different authentication methods to establish a user’s identity and control access to your application. Authentication may require a user to provide some type of credentials, such as a user name and password, or could involve the use of digital certificates or a secure key. Three of the authentication methods that you can choose in Oracle APEX are:

• Custom Authentication Scheme: This method allows you to create your own authentication logic using PL/SQL code or an external web service. You can also customize the login page and session management for your application.
• No Authentication (using DAD): This method adopts the current database user as the authenticated user. This approach can be used in combination with a mod_plsql Database Access Descriptor (DAD) configuration that uses basic authentication to set the database session user.
• Built-in Authentication Scheme: This method allows you to use one of the preconfigured authentication schemes that ship with Oracle APEX, such as Open Door Credentials, LDAP Directory, Social Sign-In, and so on.

Shared components are common elements that can be displayed or applied on any page within an application. Once you create a shared component, you can add them to any page within your APEX application. However, shared components are specific to each application and workspace, so you cannot add them to any page in any workspace4. Breadcrumbs, lists, and navigation bar entries are examples of shared components that can be used for navigation purposes4.

The Page Designer Toolbar allows you to perform various actions related to the development of an APEX page. Two of the actions that you can perform are:

• Navigate to Shared Components: This option lets you access the shared components of your application, such as lists, breadcrumbs, navigation menus, and so on. You can edit, create, or delete shared components from this option. To access this option, click the icon that resembles a puzzle piece on the Page Designer Toolbar.
• Create a new page: This option lets you create a new page for your application using the Create Page Wizard. You can choose from different page types, such as blank page, form, report, chart, calendar, and so on. To access this option, click the icon that resembles a plus sign (+) on the Page Designer Toolbar.