[Java EE][Security] - Understanding Security Realms - 2. DB authentication and authorization

Database is the most commonly used media to store authentication and authorization information for application.

This example is setting up a database for application authentication model which bases on security realms framework. The database can apply to your learning security realms and even a practical web application. It adopts following
technics:

Docker. Oracle database is running in a docker container
Oracle XE 11g. It's sufficient dev and study
WebLogic 12c. Java EE 7 container (later writing sample code will use it.)

1. Install Oracle XE 11g on Docker

Install Docker on you computer
Set up Oracle XE 11g on docker

2. Make your design satisfy security realms' thought

reference:
Main thought of security realms

3. Tables relationship

4. Set up a new DB on Oracle XE

I will create a new database, called wbbank. Why it calls wbbank, because I plan on writing a sample project in the future, which is called WBBANK, an web application for a fabled bank. And the tables created today are wholly
for illustrating security realms. So don't worry, it's just a name, a symbol, and will not impact eventual effect.

4.1 Create directory to store data file in docker oracle11g container

> ssh root@192.168.99.100 -p 2222
> su oracle
> mkdir -p /u01/app/oracle/oradata/XE/apps

4.2 Create exclusive tablespace and schema

sqlplus sys/oracle as sysdba

CREATE TABLESPACE WBBANK DATAFILE '/u01/app/oracle/oradata/XE/apps/wbbank.dbf' SIZE 100M AUTOEXTEND ON NEXT 10M MAXSIZE UNLIMITED;
CREATE USER wbbank_dba IDENTIFIED BY oracle DEFAULT TABLESPACE WBBANK QUOTA UNLIMITED ON WBBANK;
GRANT ALL PRIVILEGES TO wbbank_dba;

4.3 Create tables and sequences

Now you can switch to wbbank_dba.

-- Create tables
CREATE SEQUENCE SEQ_Users;
CREATE SEQUENCE SEQ_Roles;
CREATE SEQUENCE SEQ_Groups;

CREATE TABLE Users
(
Id          INTEGER NOT NULL ,
Name        VARCHAR2 (50 CHAR) ,
Password    VARCHAR2 (20 CHAR) ,
Description VARCHAR2 (200 CHAR)
) ;
ALTER TABLE Users ADD CONSTRAINT Users_PK PRIMARY KEY ( Id ) ;
ALTER TABLE Users ADD CONSTRAINT Users_UN_Name UNIQUE ( Name ) ;

CREATE TABLE Roles
(
Id          INTEGER NOT NULL ,
Name        VARCHAR2 (50 CHAR) ,
Description VARCHAR2 (200 CHAR)
) ;
ALTER TABLE Roles ADD CONSTRAINT Roles_PK PRIMARY KEY ( Id ) ;
ALTER TABLE Roles ADD CONSTRAINT Roles_UN_Name UNIQUE ( Name ) ;

CREATE TABLE Groups
(
Id          INTEGER NOT NULL ,
Name        VARCHAR2 (50 CHAR) ,
Description VARCHAR2 (200 CHAR)
) ;
ALTER TABLE Groups ADD CONSTRAINT Groups_PK PRIMARY KEY ( Id ) ;
ALTER TABLE Groups ADD CONSTRAINT Groups_UN_Name UNIQUE ( Name ) ;

CREATE TABLE User_Role
(
UserId INTEGER NOT NULL ,
RoleId INTEGER NOT NULL
) ;
ALTER TABLE User_Role ADD CONSTRAINT User_Role_PK PRIMARY KEY ( UserId, RoleId ) ;
ALTER TABLE User_Role ADD CONSTRAINT User_Role_Roles_FK FOREIGN KEY ( RoleId ) REFERENCES Roles ( Id ) ON DELETE CASCADE ;
ALTER TABLE User_Role ADD CONSTRAINT User_Role_Users_FK FOREIGN KEY ( UserId ) REFERENCES Users ( Id ) ON DELETE CASCADE ;

CREATE TABLE User_Group
(
UserId INTEGER ,
GroupId INTEGER
) ;
ALTER TABLE User_Group ADD CONSTRAINT User_Group_PK PRIMARY KEY ( GroupId, UserId ) ;
ALTER TABLE User_Group ADD CONSTRAINT User_Group_Groups_FK FOREIGN KEY ( GroupId ) REFERENCES Groups ( Id ) ON DELETE CASCADE ;
ALTER TABLE User_Group ADD CONSTRAINT User_Group_Users_FK FOREIGN KEY ( UserId ) REFERENCES Users ( Id ) ON DELETE CASCADE ;

CREATE TABLE Group_Role
(
GroupId INTEGER NOT NULL ,
RoleId  INTEGER NOT NULL
) ;
ALTER TABLE Group_Role ADD CONSTRAINT Group_Role_PK PRIMARY KEY ( GroupId, RoleId ) ;
ALTER TABLE Group_Role ADD CONSTRAINT Group_Role_Roles_FK FOREIGN KEY ( RoleId ) REFERENCES Roles ( Id ) ON DELETE CASCADE ;
ALTER TABLE Group_Role ADD CONSTRAINT Group_Role_Groups_FK FOREIGN KEY ( GroupId ) REFERENCES Groups ( Id ) ON DELETE CASCADE ;

4.4 Add data

Please note, you might need to change some values at following script. Some ids may not be as same as mine script.

Login DB with wbbank_dba.

-- Add users
INSERT INTO Users ( ID, NAME, PASSWORD, DESCRIPTION) VALUES ( SEQ_USERS.NEXTVAL, 'bill', 'password', 'Bill.Gates');
INSERT INTO Users ( ID, NAME, PASSWORD, DESCRIPTION) VALUES ( SEQ_USERS.NEXTVAL, 'peter', 'password', 'Peter.Hamz');
INSERT INTO Users ( ID, NAME, PASSWORD, DESCRIPTION) VALUES ( SEQ_USERS.NEXTVAL, 'tom', 'password', 'Tom.Lee');
INSERT INTO Users ( ID, NAME, PASSWORD, DESCRIPTION) VALUES ( SEQ_USERS.NEXTVAL, 'neo', 'password', 'Neo.Wang');

-- Add roles
INSERT INTO Roles ( ID, NAME, DESCRIPTION) VALUES ( SEQ_ROLES.NEXTVAL, 'UserApplicant', 'Apply for WBBANK user');
INSERT INTO Roles ( ID, NAME, DESCRIPTION) VALUES ( SEQ_ROLES.NEXTVAL, 'UserManager', 'Manage WBBANK user application');
INSERT INTO Roles ( ID, NAME, DESCRIPTION) VALUES ( SEQ_ROLES.NEXTVAL, 'AccountApplicant', 'Apply for a new account, new creditcard, new saving account e.g.');
INSERT INTO Roles ( ID, NAME, DESCRIPTION) VALUES ( SEQ_ROLES.NEXTVAL, 'AccountManager', 'Manage account application');
INSERT INTO Roles ( ID, NAME, DESCRIPTION) VALUES ( SEQ_ROLES.NEXTVAL, 'TransactionApplicant', 'Start a transication, pay bill, transfer money e.g.');
INSERT INTO Roles ( ID, NAME, DESCRIPTION) VALUES ( SEQ_ROLES.NEXTVAL, 'TransactionManager', 'Manage transication, modify, rollback e.g.');

-- Add groups
INSERT INTO Groups ( ID, NAME, DESCRIPTION) VALUES ( SEQ_GROUPS.NEXTVAL, 'Users', 'User group of WBBANK.');
INSERT INTO Groups ( ID, NAME, DESCRIPTION) VALUES ( SEQ_GROUPS.NEXTVAL, 'Administrators', 'Staff group of WBBANK.');

-- user_role
-- 目前不使用这种角色映射方式。只采用User_Group方式。

-- group_role
INSERT INTO Group_Role ( GROUPID, ROLEID ) VALUES( 1, 1);
INSERT INTO Group_Role ( GROUPID, ROLEID ) VALUES( 1, 3);
INSERT INTO Group_Role ( GROUPID, ROLEID ) VALUES( 1, 5);
INSERT INTO Group_Role ( GROUPID, ROLEID ) VALUES( 2, 2);
INSERT INTO Group_Role ( GROUPID, ROLEID ) VALUES( 2, 4);
INSERT INTO Group_Role ( GROUPID, ROLEID ) VALUES( 2, 6);

-- user_group
INSERT INTO User_Group ( USERID, GROUPID) VALUES ( 1, 1);
INSERT INTO User_Group ( USERID, GROUPID) VALUES ( 2, 1);
INSERT INTO User_Group ( USERID, GROUPID) VALUES ( 3, 1);
INSERT INTO User_Group ( USERID, GROUPID) VALUES ( 4, 2);

Don'f forget to COMMIT all your operations.