create or replace table department 
(
   dep_id               char(10)                       not null,
   pro_id               char(10)                       null,
   name                 char(10)                       null,
   manager              char(10)                       null,
   project              char(10)                       null,
   constraint PK_DEPARTMENT primary key clustered (dep_id)
);

/*==============================================================*/
/* Index: department_PK                                         */
/*==============================================================*/
create unique clustered index department_PK on department (
dep_id ASC
);

/*==============================================================*/
/* Index: dep_assigned_pro_FK                                   */
/*==============================================================*/
create index dep_assigned_pro_FK on department (
pro_id ASC
);

/*==============================================================*/
/* Table: employee                                              */
/*==============================================================*/
create or replace table employee 
(
   emp_id               char(10)                       not null,
   name                 char(10)                       null,
   Identi_id            char(10)                       not null,
   role_id              char(10)                       null,
   pro_id               char(10)                       null,
   sala_id              char(10)                       null,
   dep_id               char(10)                       null,
   gender               char(10)                       null,
   age                  char(10)                       null,
   phone                char(10)                       null,
   department           char(10)                       null,
   position             char(10)                       null,
   project              char(10)                       null,
   constraint PK_EMPLOYEE primary key clustered (emp_id, Identi_id)
);

/*==============================================================*/
/* Index: employee_PK                                           */
/*==============================================================*/
create unique clustered index employee_PK on employee (
emp_id ASC,
Identi_id ASC
);

/*==============================================================*/
/* Index: emp_has_role_FK                                       */
/*==============================================================*/
create index emp_has_role_FK on employee (
role_id ASC
);

/*==============================================================*/
/* Index: emp_belong_dep_FK                                     */
/*==============================================================*/
create index emp_belong_dep_FK on employee (
dep_id ASC
);

/*==============================================================*/
/* Index: emp_gets_sal_FK                                       */
/*==============================================================*/
create index emp_gets_sal_FK on employee (
sala_id ASC
);

/*==============================================================*/
/* Index: emp_assigned_pro_FK                                   */
/*==============================================================*/
create index emp_assigned_pro_FK on employee (
pro_id ASC
);

/*==============================================================*/
/* Table: project                                               */
/*==============================================================*/
create or replace table project 
(
   pro_id               char(10)                       not null,
   name                 char(10)                       not null,
   manager              char(10)                       null,
   department           char(10)                       null,
   starttime            char(10)                       null,
   endtime              char(10)                       null,
   constraint PK_PROJECT primary key clustered (pro_id)
);

/*==============================================================*/
/* Index: project_PK                                            */
/*==============================================================*/
create unique clustered index project_PK on project (
pro_id ASC
);

/*==============================================================*/
/* Table: role                                                  */
/*==============================================================*/
create or replace table role 
(
   role_id              char(10)                       not null,
   dep_id               char(10)                       null,
   name                 char(10)                       not null,
   department           char(10)                       null,
   constraint PK_ROLE primary key clustered (role_id)
);

/*==============================================================*/
/* Index: role_PK                                               */
/*==============================================================*/
create unique clustered index role_PK on role (
role_id ASC
);

/*==============================================================*/
/* Index: dep_sets_role_FK                                      */
/*==============================================================*/
create index dep_sets_role_FK on role (
dep_id ASC
);

/*==============================================================*/
/* Table: salary                                                */
/*==============================================================*/
create or replace table salary 
(
   sala_id              char(10)                       not null,
   emp_id               char(10)                       null,
   Identi_id            char(10)                       null,
   emp                  char(10)                       null,
   base                 char(10)                       null,
   bonus                char(10)                       null,
   deduction            char(10)                       null,
   constraint PK_SALARY primary key clustered (sala_id)
);

/*==============================================================*/
/* Index: salary_PK                                             */
/*==============================================================*/
create unique clustered index salary_PK on salary (
sala_id ASC
);

/*==============================================================*/
/* Index: emp_gets_sal2_FK                                      */
/*==============================================================*/
create index emp_gets_sal2_FK on salary (
emp_id ASC,
Identi_id ASC
);

alter table department
   add constraint FK_DEPARTME_DEP_ASSIG_PROJECT foreign key (pro_id)
      references project (pro_id)
      on update restrict
      on delete restrict;

alter table employee
   add constraint FK_EMPLOYEE_EMP_ASSIG_PROJECT foreign key (pro_id)
      references project (pro_id)
      on update restrict
      on delete restrict;

alter table employee
   add constraint FK_EMPLOYEE_EMP_BELON_DEPARTME foreign key (dep_id)
      references department (dep_id)
      on update restrict
      on delete restrict;

alter table employee
   add constraint FK_EMPLOYEE_EMP_GETS__SALARY foreign key (sala_id)
      references salary (sala_id)
      on update restrict
      on delete restrict;

alter table employee
   add constraint FK_EMPLOYEE_EMP_HAS_R_ROLE foreign key (role_id)
      references role (role_id)
      on update restrict
      on delete restrict;

alter table role
   add constraint FK_ROLE_DEP_SETS__DEPARTME foreign key (dep_id)
      references department (dep_id)
      on update restrict
      on delete restrict;

alter table salary
   add constraint FK_SALARY_EMP_GETS__EMPLOYEE foreign key (emp_id, Identi_id)
      references employee (emp_id, Identi_id)
      on update restrict
      on delete restrict;

Please modify the table attribute, replace the "chat" type with other suitable type.