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The data type of a field determines the format, validation, and display of the field value on a form. When selecting a data type for a field, you should consider the purpose and function of the field. The statements A, C, and D are correct for selecting a data type for a field. For example:

Use the Choice data type to limit options in a field: The Choice data type allows you to create a field that has a predefined set of options for the user to select from. The options can be displayed as a drop-down list, radio buttons, or checkboxes. For example, you can use the Choice data type for a field that indicates the priority of a task.

Use the Phone Number data type to automate phone number data validation: The Phone Number data type allows you to create a field that accepts and validates phone numbers. The field will automatically format the phone number according to the user’s locale and country code. For example, you can use the Phone Number data type for a field that stores the contact number of a user.

Use the string data type for a free-form text field: The string data type allows you to create a field that accepts any text input from the user. The field can have a maximum length of 255 characters. For example, you can use the string data type for a field that captures the short description of an incident.

The statement B is not correct for selecting a data type for a field. There is no Data data type in ServiceNow. To enter the date and time of day, you should use the Date/Time data type. The Date/Time data type allows you to create a field that accepts and displays a date and time value. The field will use a calendar widget and a time picker to help the user enter the value. For example, you can use the Date/Time data type for a field that records the due date of a task.

An Access Control list (ACL) defines what data users can access and how they can access it in ServiceNow tables1. The ACL evaluates the user roles and the conditions defined in the ACL rules to determine the user’s access level2. In this case, the ACL rules for the table are as follows:

table.None read Access Control for users with the admin and itil roles: This means that users with the admin or itil roles cannot read any field in the table unless there is a more specific rule that grants them access3.

table. * read Access Control for users with the admin role: This means that users with the admin role can read all fields in the table.

table. field3 read Access Control for users with the itil role: This means that users with the itil role can read only the field3 in the table.

Therefore, a user with the itil role can read only the field3 in the table, and not the other fields.

References = 1: Access Control Lists - ServiceNow Docs 2: How ACL Rules Are Evaluated - ServiceNow Docs 3: Access Control List Rules - ServiceNow Docs : Wildcard in ACL Rules - ServiceNow Docs : Field-Level ACL Rules - ServiceNow Docs

"Schema map: Provides a graphical representation of the relationships between tables."

https://docs.servicenow.com/bundle/tokyo-platform-administration/page/administer/table-administration/concept/c_TableAdministration.html