Генерирайте DDL с Oracle Sql Developer, за да включите външни ключове

Бързият DDL не използва каквито и да е предпочитания, прави го според това, което смятаме за подходящо - което, разбира се, е напълно субективно.

Ако обаче отидете на SQL страницата за обект в дървото, DDL ще бъде генериран, следвайки предпочитанията, зададени в Предпочитания> База данни> Експортиране.

За версия 4.2 можете също да използвате командата DDL в работния лист. И можете да използвате SET DDL, за да изключите или включите типа DDL, който искате да генерирате.

SET DDL PRETTY ON;
SET DDL CONSTRAINTS ON;
SET DDL REF_CONSTRAINTS ON;
SET DDL PARTITIONING ON;
SET DDL TABLESPACE OFF;
SET DDL SEGMENT_ATTRIBUTES OFF;
SET DDL STORAGE OFF;

DDL EMPLOYEES

DDL Option CONSTRAINTS on
DDL Option REF_CONSTRAINTS on
DDL Option PARTITIONING on
DDL Option TABLESPACE off
DDL Option SEGMENT_ATTRIBUTES off
DDL Option STORAGE off
DDL Option STORAGE off
  CREATE TABLE "HR"."EMPLOYEES" 
   (    "EMPLOYEE_ID" NUMBER(6,0), 
    "FIRST_NAME" VARCHAR2(20), 
    "LAST_NAME" VARCHAR2(25) CONSTRAINT "EMP_LAST_NAME_NN" NOT NULL ENABLE, 
    "EMAIL" VARCHAR2(25) CONSTRAINT "EMP_EMAIL_NN" NOT NULL ENABLE, 
    "PHONE_NUMBER" VARCHAR2(20), 
    "HIRE_DATE" DATE CONSTRAINT "EMP_HIRE_DATE_NN" NOT NULL ENABLE, 
    "JOB_ID" VARCHAR2(10) CONSTRAINT "EMP_JOB_NN" NOT NULL ENABLE, 
    "SALARY" NUMBER(8,2), 
    "COMMISSION_PCT" NUMBER(2,2), 
    "MANAGER_ID" NUMBER(6,0), 
    "DEPARTMENT_ID" NUMBER(4,0), 
     CONSTRAINT "EMP_SALARY_MIN" CHECK (salary > 0) ENABLE, 
     CONSTRAINT "EMP_EMAIL_UK" UNIQUE ("EMAIL")
  USING INDEX  ENABLE, 
     CONSTRAINT "EMP_EMP_ID_PK" PRIMARY KEY ("EMPLOYEE_ID")
  USING INDEX  ENABLE, 
     CONSTRAINT "EMP_DEPT_FK" FOREIGN KEY ("DEPARTMENT_ID")
      REFERENCES "HR"."DEPARTMENTS" ("DEPARTMENT_ID") ENABLE, 
     CONSTRAINT "EMP_JOB_FK" FOREIGN KEY ("JOB_ID")
      REFERENCES "HR"."JOBS" ("JOB_ID") ENABLE, 
     CONSTRAINT "EMP_MANAGER_FK" FOREIGN KEY ("MANAGER_ID")
      REFERENCES "HR"."EMPLOYEES" ("EMPLOYEE_ID") ENABLE
   ) ;
   COMMENT ON COLUMN "HR"."EMPLOYEES"."EMPLOYEE_ID" IS 'Primary key of employees table.';
   COMMENT ON COLUMN "HR"."EMPLOYEES"."FIRST_NAME" IS 'First name of the employee. A not null column.';
   COMMENT ON COLUMN "HR"."EMPLOYEES"."LAST_NAME" IS 'Last name of the employee. A not null column.';
   COMMENT ON COLUMN "HR"."EMPLOYEES"."EMAIL" IS 'Email id of the employee';
   COMMENT ON COLUMN "HR"."EMPLOYEES"."PHONE_NUMBER" IS 'Phone number of the employee; includes country code and area code';
   COMMENT ON COLUMN "HR"."EMPLOYEES"."HIRE_DATE" IS 'Date when the employee started on this job. A not null column.';
   COMMENT ON COLUMN "HR"."EMPLOYEES"."JOB_ID" IS 'Current job of the employee; foreign key to job_id column of the
jobs table. A not null column.';
   COMMENT ON COLUMN "HR"."EMPLOYEES"."SALARY" IS 'Monthly salary of the employee. Must be greater
than zero (enforced by constraint emp_salary_min)';
   COMMENT ON COLUMN "HR"."EMPLOYEES"."COMMISSION_PCT" IS 'Commission percentage of the employee; Only employees in sales
department elgible for commission percentage';
   COMMENT ON COLUMN "HR"."EMPLOYEES"."MANAGER_ID" IS 'Manager id of the employee; has same domain as manager_id in
departments table. Foreign key to employee_id column of employees table.
(useful for reflexive joins and CONNECT BY query)';
   COMMENT ON COLUMN "HR"."EMPLOYEES"."DEPARTMENT_ID" IS 'Department id where employee works; foreign key to department_id
column of the departments table';
   COMMENT ON TABLE "HR"."EMPLOYEES"  IS 'employees table. Contains 107 rows. References with departments,
jobs, job_history tables. Contains a self reference.';
  CREATE INDEX "HR"."EMP_DEPARTMENT_IX" ON "HR"."EMPLOYEES" ("DEPARTMENT_ID") 
  ;
  CREATE INDEX "HR"."EMP_JOB_IX" ON "HR"."EMPLOYEES" ("JOB_ID") 
  ;
  CREATE INDEX "HR"."EMP_MANAGER_IX" ON "HR"."EMPLOYEES" ("MANAGER_ID") 
  ;
  CREATE INDEX "HR"."EMP_NAME_IX" ON "HR"."EMPLOYEES" ("LAST_NAME", "FIRST_NAME") 
  ;
  CREATE INDEX "HR"."EMP_NAME_UPPER" ON "HR"."EMPLOYEES" (UPPER("LAST_NAME")) 
  ;
  CREATE OR REPLACE EDITIONABLE TRIGGER "HR"."UPDATE_JOB_HISTORY" 
  AFTER UPDATE OF job_id, department_id ON employees
  FOR EACH ROW
BEGIN
  add_job_history(:old.employee_id, :old.hire_date, sysdate,
                  :old.job_id, :old.department_id);
END;
/
ALTER TRIGGER "HR"."UPDATE_JOB_HISTORY" DISABLE;
  CREATE OR REPLACE EDITIONABLE TRIGGER "HR"."SECURE_EMPLOYEES" 
  BEFORE INSERT OR UPDATE OR DELETE ON employees
BEGIN
  secure_dml;
END secure_employees;
/
ALTER TRIGGER "HR"."SECURE_EMPLOYEES" DISABLE;