create table in sql *plus code example

Example 1: create table oracle

CREATE TABLE ot.persons(
    person_id NUMBER GENERATED BY DEFAULT AS IDENTITY,
    first_name VARCHAR2(50) NOT NULL,
    last_name VARCHAR2(50) NOT NULL,
    PRIMARY KEY(person_id)
);

Example 2: create table

CREATE TABLE fact (
id SERIAL PRIMARY KEY NOT NULL,
type VARCHAR(255),
text TEXT
);