Simple example - Table-TABLE1

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Description Columns Primary key Check Constraints Foreign keys Unique Keys Options Indexes Referenced by Triggers Partitions

TABLE1

DDL script

Columns

Name	Type	Nullable
COLUMN1	VARCHAR2(4000)	N
COLUMN2	VARCHAR2(4000)	Y
COLUMN3	VARCHAR2(4000)	N
COLUMN4	VARCHAR2(4000)	N
COLUMN5	VARCHAR2(4000)	N

Foreign Keys:

Constraint Name	Columns	Referenced table	Referenced Constraint	On Delete Rule
t1t2fk	COLUMN3	TABLE2	t2pk	NO ACTION

Options:

Option	Settings
Tablespace	USERS
Index Organized	No
Generated by Oracle	No
Clustered	No
Nested	No
Temporary	No

Triggers

TRIGGER1

Legend: comment string keyword reserved word operator

CREATE TRIGGER 
TRIGGER1 BEFORE INSERT OR DELETE OR UPDATE OF COLUMN2,COLUMN3,COLUMN4,COLUMN5 ON TABLE1 

REFERENCING NEW AS NEW OLD AS OLD
BEGIN
  NULL;
END;