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The :required selector selects form elements which are required. Form elements with a required attribute are defined as required. Note: The :required selector only applies to the form elements: input, select and textarea. Tip: Use the :optional selector to select form elements which are optional.

The "right" way to make a column mandatory is to set it to NOT NULL. If there are already nulls in the data then I would think those need to be set from a business standpoint (otherwise why is it mandatory?). Business requirements can be enforced in any architectural layer.

For example, the Name, Id, Bill Every, Currency, and Price fields are mandatory(by default) while creating a Plan.

Use asterisks to indicate required fields? Another common approach seen in forms is to mark the mandatory fields with an asterisk and not mark the optional fields. While an asterisk to the left of the label makes it easy to see, it assumes a user understands what this means.

The required attribute is a boolean attribute. When present, it specifies that an input field must be filled out before submitting the form. Note: The required attribute works with the following input types: text, search, url, tel, email, password, date pickers, number, checkbox, radio, and file.

Using an asterisk (*) symbol content authors notify mandatory field. This is said to be one of the accessible modes of identifying a mandatory field, however this method also will be a problem with screen readers in certain times.

Examples of HTML Required Attribute <input> Attribute: Required Field. Add the ?required ?attribute into the input element to mark a field as simple. ... <Text Area> Attribute. ... <select > Attribute.