Oracle

SELECT * FROM TABS;
SELECT * FROM ALL_TAB_COLUMNS;

 

MySQL

SELECT * FROM INFORMATION_SCHEMA.TABLES;
SELECT * FROM INFORMATION_SCHEMA.COLUMNS;

 

두 DBMS에서 가장 큰 차이점은 Oracle의 경우, 'TABS','ALL_TAB_COLUMNS'와 같은 이름으로 바로 조회가 가능하지만

MySQL에서는 INFORMATION_SCHEMA라는 DB명과 그에 맞는 이름을 사용하여 조회를 해야 한다.