登录表结构

I have a database 'practice'.I`m trying to make database that allows users to Login and submit data in forms.

The admin adds the username and the password for few users.The users then login using the password and username.

Now Since the admin adds users his functions must be different from the users and a different page is to be loaded for him so to identify admin.I have added the following admin column in the table.

authenticate table
username | password | admin
----------------------------
admin    | 7821y34n | 1
 007     |  435432  | 0

admin is of type tinyint if 1 then admin if 0 then user Is this the way to create an authenticate table?

A good practice is to map a ROLE table to a USER table this way a user could have multiple roles.

For your second question as I sayed in the comments I would put all data in the user table but if you need to separate data in two tables you could do it this way.

Just by mapping user_details table to the user table. (user_id in user_details)

Table USER

ID | USERNAME | PASSWORD  
-------------------------
1  | bill     | 09hk4352  /* password should be encoded */
2  | frank    | 7dfs3454 

Table USER_DETAILS

ID | DOB         | USER_ID      
------------------------
2  | 1988-05-12  | 1  

Table ROLE

ID | ROLE 
---------------
1  | ROLE_USER 
2  | ROLE_ADMIN  
3  | ROLE_GUEST

Table USER_ROLE

ROLE_ID | USER_ID
------------------
1       | 2 /* user "frank" has ROLE_USER */
2       | 2 /* user "frank" has also ROLE_ADMIN */
1       | 1 /* user "bill" has ROLE_USER */