Laravel package Entrust Migration in SQL

migration.sql

-- Creating Roles Table 
-- Create table for storing roles
create table roles ( id number(10,0) not null, name varchar2(255) 
                    not null, display_name varchar2(255) null, description varchar2(255) null, created_at timestamp null, updated_at timestamp null, 
                    constraint roles_id_pk primary key ( id ) )
                    
alter table roles add constraint roles_name_uk unique ( name )
create sequence roles_id_seq start with 1

create trigger roles_id_trg
            before insert on roles
            for each row
                begin
            if :new.id is null then
                select roles_id_seq.nextval into :new.id from dual;
            end if;
            end;
            
-- Roles and User Relation Table
-- Create table for associating roles to users (Many-to-Many)
create table role_user ( user_id number(10,0) 
                        not null, role_id number(10,0) 
                        not null, constraint role_user_user_id_fk foreign key ( user_id ) 
                                  references SCR_APP_USER_INFO ( user_id ) 
                        on delete cascade, constraint role_user_role_id_fk foreign key ( role_id ) references roles ( id ) 
                        on delete cascade, constraint role_user_user_id_role_id_pk primary key ( user_id, role_id ) )
                        

-- Creating Permissions Table
-- Create table for storing permissions
create table permissions ( id number(10,0) not null, 
                          name varchar2(255) not null, 
                          display_name varchar2(255) null, 
                          description varchar2(255) null, 
                          created_at timestamp null, 
                          updated_at timestamp null, 
                          constraint permissions_id_pk primary key ( id ) )
                          
alter table permissions add constraint permissions_name_uk unique ( name )
create sequence permissions_id_seq start with 1 

create trigger permissions_id_trg
            before insert on permissions
            for each row
                begin
            if :new.id is null then
                select permissions_id_seq.nextval into :new.id from dual;
            end if;
            end;
            
            
-- Persmission and Role Relation Table
-- Create table for associating permissions to roles (Many-to-Many)
                         
create table permission_role ( permission_id number(10,0) 
                              not null, role_id number(10,0) 
                              not null, constraint permission_role_permission_id_ foreign key ( permission_id ) 
                                references permissions ( id ) 
                              on delete cascade, constraint permission_role_role_id_fk foreign key ( role_id ) 
                                references roles ( id ) 
                              on delete cascade, 
                              constraint permission_role_permission_id_ primary key ( permission_id, role_id ) )