The table authentication corresponds to session of a user with a secure session id and starting at the current time
| Name | Type | Not Null | Primary Key | Foreign Key | Remarks |
| :——— | :——— | :————- | :—————- | :—————- | :———— |
| authtoken | character varying(32) | X | X | It corresponds to the secure id of the authentication and also the primary key of the table. It is a 128-bit random number represented as a 32-character hexadecimal string | |
| datecreated | timestamp(0) | This is the date of the creation of the creation of the session | |||
| datelastactive | timestamp(0) | ||||
| userid | integer | X | userlogin(userid) | This is a foreign key to the table userlogin. It corresponds to the user who wanted to login on the application. |