How Does Oracle query the complete definition statement of an object?

How Does Oracle query the complete definition statement Syntax of an object: DBMS_METADATA.GET_DDL (object_typeINVARCHAR2, nameINVA

How Does Oracle query the complete definition statement Syntax of an object: DBMS_METADATA.GET_DDL (object_type IN VARCHAR2, name IN VA

How Does Oracle query the complete definition statement of an object?

Syntax:

DBMS_METADATA.GET_DDL (
Object_type IN VARCHAR2,
Name IN VARCHAR2,
Schema IN VARCHAR2 default null,
Version IN VARCHAR2 DEFAULT 'compuble ',
Model IN VARCHAR2 DEFAULT 'oracle ',
Transform IN VARCHAR2 DEFAULT 'ddl ')
Return clob;

Example: select dbms_metadata.get_ddl ('table', 'emp', 'Scott ') from dual;

SQL> select dbms_metadata.get_ddl ('table', 'emp', 'Scott ') from dual;

DBMS_METADATA.GET_DDL ('table', 'emp', 'Scott ')
--------------------------------------------------------------------------------

Create table "SCOTT". "EMP"
("EMPNO" NUMBER (4, 0 ),
"ENAME" VARCHAR2 (10 ),

-- Set LONG and pagesize for full display
SQL> SET LONG 2000000
SQL> SET PAGESIZE 0
SQL> select dbms_metadata.get_ddl ('table', 'emp', 'Scott ') from dual;

Create table "SCOTT". "EMP"
("EMPNO" NUMBER (4, 0 ),
"ENAME" VARCHAR2 (10 ),
"JOB" VARCHAR2 (9 ),
"MGR" NUMBER (4, 0 ),
"HIREDATE" DATE,
"SAL" NUMBER (7,2 ),
"COMM" NUMBER (7,2 ),
"DEPTNO" NUMBER (2, 0 ),
CONSTRAINT "PK_EMP" primary key ("EMPNO ")
Using index pctfree 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
STORAGE (INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 freelist groups 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT
CELL_FLASH_CACHE DEFAULT)
TABLESPACE "USERS" ENABLE,
CONSTRAINT "FK_DEPTNO" foreign key ("DEPTNO ")
REFERENCES "SCOTT". "DEPT" ("DEPTNO") ENABLE
) SEGMENT CREATION IMMEDIATE
PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
STORAGE (INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 freelist groups 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "USERS"

,