Date

An ISO-8601 formatted string containing the date YYYY-MM-DD. Example: 2013-10-21.

General

In the Edit Field form you can find the following fields :

Name - Unique field name in the Schema, it will appear in the generated model in APIs
Display Name - Name exposed in the Content Editor.
Required - Mark the field needed in the Content Editor.
Translatable - Mark the field to have a different value for each locale in the Content Editor.
Description - Description exposed in the Content Editor.
Default Value - The value applied at Content Creation.