Explanation
A validation is a rule that checks the data entered by end users before processing it. A validation of type Item is numeric checks if a page item value is a valid number. When the page is submitted, if the validation fails, an error message is displayed both in the notification area (atthe top of the page) and below the item (next to the item label). To cause the validation error to appear only in the notification area, you need to remove P1_SALARY from the validation Associated Item attribute. The Associated Item attribute specifies which page item is associated with the validation and where to display the error message if the validation fails.
Setting the value Required to Yes on P1_SALARY or setting Display Location to Inline in Notification will not affect the validation error display. Verified References: [Creating Validations - Oracle Help Center],
[Validation Attributes - Oracle Help Center]

Explanation
A faceted search page is a type of page that allows end users to filter data by applying one or more facets. A facet is a set of filters based on a column or expression. By default, when end users select a facet value, they need to click on an Apply button for that facet to apply the filter to the report. To make report filtering automatically executed when any facet value changes, you need to navigate to the faceted search region Attributes, and disable the Batch Facet Changes attribute. The Batch Facet Changes attribute determines whether end users need to click on an Apply button for each facet or not. When this attribute is disabled, the report is automatically refreshed when any facet value changes. The other options are not relevant to the report filtering behavior. Verified References: [Faceted Search Attributes - Oracle Help Center], [Batch Facet Changes - Oracle APEX]

Explanation
Using Data Workshop, you can perform the following tasks:
Load vast amount of data into the database: You can use the Data Load option to load data from various file formats such as XLSX, CSV, XML, and JSON into a table or a collection in your database. You can also use the Data Load Wizard to guide you through the steps of loading data.
Export vast amount of data from the database into a file: You can use the Data Unload option to export data from a table or a collection in your database into a file in CSV or JSON format. You can also use the Data Unload Wizard to guide you through the steps of exporting data.
Load data using various file formats such as XLSX, CSV, XML, and JSON: You can use the Data Load option to load data from different file formats into your database. You can choose the file format from a list of supported formats or let Oracle APEX detect it automatically.
The other option is incorrect because:
Delete data from the database: You cannot use Data Workshop to delete data from the database. You can use SQL Commands or SQL Scripts in SQL Workshop to run DELETE statements to delete data from the database.
Verified References: [About Data Workshop] [Loading Data] [Unloading Data]

Explanation
The "Create an Application From a File" wizard is a tool that allows developers to create an application based on an existing spreadsheet file or sample data set. Some of the statements that are true about loading data from this wizard are:
A sample data set from the sample list can be uploaded. You can use the Sample Data Sets option to select a predefined data set from a list of available samples, such as Employees, Products, Projects, etc.
CSV, XLSX, XML, TXT, or JSON files can be uploaded. You can use the Upload a File option to upload a spreadsheet file in one of these formats and create an application based on its data. You cannot upload seed data from a SQL script, paste and load XML and JSON data, or upload data from remote web services using this wizard. You can use other features in App Builder or SQL Workshop to perform these actions, such as SQL Scripts, RESTful Services, etc. VerifiedReferences: [Creating an Application From a File - Oracle Help Center], [Creating an Application Based on Sample Data Sets - Oracle Help Center]