DBMS별 데이터 타입

	Oracle	MySQL/MariaDB	SQL Server	PostgreSQL
Numeric Type	NUMBER FLOAT	TINYINT SMALLINT MEDIUMINT INT BIGINT DECIMAL FLOAT DOUBLE	TINYINT SMALLINT INT BIGINT NUMERIC / DECIMAL FLOAT REAL	SMALLINT INTEGER BIGINT DECIMAL NUMERIC REAL DOUBLE
String Type	CHAR VARCHAR2	CHAR VARCHAR	CHAR VARCHAR	CHAR VARCHAR
Date/Time Type	DATE TIMESTAMP	DATE TIME DATETIME TIMESTAMP YEAR	DATE DATETIME DATETIME2 SMALLDATETIME TIME	DATE TIME TIMESTAMP
Boolean Type		BIT	BIT	BOOLEAN
LOB Type	LONG CLOB BLOB	TEXT MEDIUMTEXT LONGTEXT BLOB	TEXT BINARY IMAGE	TEXT

보통 여기서 쓰는 것들만 써서 데이터베이스 처리하는 듯 하다.