Data Types
| Type system | Integer | Floating point | Decimal | String | Binary | Date/Time | Boolean | Other | |
|---|---|---|---|---|---|---|---|---|---|
| Altibase | Static | SMALLINT (16-bit), INTEGER (32-bit), BIGINT (64-bit) | REAL(32-bit), DOUBLE(64-bit) | DECIMAL, NUMERIC, NUMBER, FLOAT | CHAR, VARCHAR, NCHAR, NVARCHAR, CLOB | BLOB, BYTE, NIBBLE, BIT, VARBIT | DATE | GEOMETRY | |
| CUBRID | Static | SMALLINT (16-bit), INTEGER (32-bit), BIGINT (64-bit) | FLOAT, REAL(32-bit), DOUBLE(64-bit) | DECIMAL, NUMERIC | CHAR, VARCHAR, NCHAR, NVARCHAR, CLOB | BLOB | DATE, DATETIME, TIME, TIMESTAMP | BIT | MONETARY, BIT VARYING, SET, MULTISET, SEQUENCE |
| Drizzle | Static | INT (32-bit), BIGINT (64-bit) | DOUBLE (aka REAL) (64-bit) | DECIMAL | BINARY, VARCHAR, VARBINARY, TEXT, | BLOB | DATETIME, DATE, TIMESTAMP | ENUM, SERIAL | |
| Empress Embedded Database | Static | TINYINT, SQL_TINYINT or INTEGER8
SMALLINT, SQL_SMALLINT or INTEGER16 INTEGER, INT, SQL_INTEGER or INTEGER32 BIGINT, SQL_BIGINT or INTEGER64 |
REAL, SQL_REAL or FLOAT32
DOUBLE PRECISION, SQL_DOUBLE or FLOAT64 FLOAT or SQL_FLOAT EFLOAT |
DECIMAL, DEC, NUMERIC, SQL_DECIMAL or SQL_NUMERIC
DOLLAR |
CHARACTER,
ECHARACTER, CHARACTER VARYING, NATIONAL CHARACTER, NATIONAL CHARACTER VARYING and NLSCHARACTER CHARACTER LARGE OBJECT, TEXT, NATIONAL CHARACTER LARGE OBJECT, and NLSTEXT |
BINARY LARGE OBJECT or BLOB
BULK |
DATE,
EDATE, TIME, ETIME, EPOCH_TIME, TIMESTAMP, MICROTIMESTAMP |
BOOLEAN | SEQUENCE 32
SEQUENCE |
| HSQLDB | Static | TINYINT (8-bit), SMALLINT (16-bit), INTEGER (32-bit), BIGINT (64-bit) | DOUBLE (64-bit) | DECIMAL, NUMERIC | CHAR, VARCHAR, LONGVARCHAR, CLOB | BINARY, VARBINARY, LONGVARBINARY, BLOB | DATE, TIME, TIMESTAMP, INTERVAL | BOOLEAN | OTHER (object), BIT, BIT VARYING, ARRAY |
| Informix Dynamic Server | Static | SMALLINT (16-bit), INT (32-bit), INT8 (64-bit proprietary), BIGINT (64-bit) | SMALLFLOAT (32-bit), FLOAT (64-bit) | DECIMAL (32 digits float/fixed), MONEY | CHAR, VARCHAR, NCHAR, NVARCHAR, LVARCHAR, CLOB, TEXT | TEXT, BYTE, BLOB, CLOB | DATE, DATETIME, INTERVAL | BOOLEAN | SET, LIST, MULTISET, ROW, TIMESERIES, SPATIAL, USER DEFINED TYPES |
| Ingres | Static | TINYINT (8-bit), SMALLINT (16-bit), INTEGER (32-bit), BIGINT (64-bit) | FLOAT4 (32-bit), FLOAT (64-bit) | DECIMAL | C, CHAR, VARCHAR, LONG VARCHAR, NCHAR, NVARCHAR, LONG NVARCHAR, TEXT | BYTE, VARBYTE, LONG VARBYTE (BLOB) | DATE, ANSIDATE, INGRESDATE, TIME, TIMESTAMP, INTERVAL | N/A | MONEY, OBJECT_KEY, TABLE_KEY, USER-DEFINED DATA TYPES (via OME) |
| Microsoft SQL Server | Static | TINYINT, SMALLINT, INT, BIGINT | FLOAT, REAL | NUMERIC, DECIMAL, SMALLMONEY, MONEY | CHAR, VARCHAR, TEXT, NCHAR, NVARCHAR, NTEXT | BINARY, VARBINARY, IMAGE, FILESTREAM | DATE, DATETIMEOFFSET, DATETIME2, SMALLDATETIME, DATETIME, TIME | BIT | CURSOR, TIMESTAMP, HIERARCHYID, UNIQUEIDENTIFIER, SQL_VARIANT, XML, TABLE |
| Microsoft SQL Server Compact (Embedded Database) | Static | TINYINT, SMALLINT, INT, BIGINT | FLOAT, REAL | NUMERIC, DECIMAL, MONEY | NCHAR, NVARCHAR, NTEXT | BINARY, VARBINARY, IMAGE | DATETIME | BIT | TIMESTAMP, ROWVERSION, UNIQUEIDENTIFIER, IDENTITY, ROWGUIDCOL |
| MySQL | Static | TINYINT (8-bit), SMALLINT (16-bit), MEDIUMINT (24-bit), INT (32-bit), BIGINT (64-bit) | FLOAT (32-bit), DOUBLE (aka REAL) (64-bit) | DECIMAL | CHAR, BINARY, VARCHAR, VARBINARY, TEXT, TINYTEXT, MEDIUMTEXT, LONGTEXT | TINYBLOB, BLOB, MEDIUMBLOB, LONGBLOB | DATETIME, DATE, TIMESTAMP, YEAR | BOOLEAN (aka BOOL) = synonym for TINYINT | ENUM, SET, GIS data types (Geometry, Point, Curve, LineString, Surface, Polygon, GeometryCollection, MultiPoint, MultiCurve, MultiLineString, MultiSurface, MultiPolygon) |
| Oracle | Static + Dynamic (through ANYDATA) | NUMBER | BINARY_FLOAT, BINARY_DOUBLE | NUMBER | CHAR, VARCHAR2, CLOB, NCLOB, NVARCHAR2, NCHAR | BLOB, RAW, LONGRAW, BFILE | DATE, TIMESTAMP (with/without TIMEZONE), INTERVAL | N/A | SPATIAL, IMAGE, AUDIO, VIDEO, DICOM, XMLType |
| Polyhedra | Static | INTEGER8 (8-bit), INTEGER(16-bit), INTEGER (32-bit) | FLOAT32 (32-bit), FLOAT (aka REAL; 64-bit) | N/A | VARCHAR, LARGE VARCHAR (aka CHARACTER LARGE OBJECT) | LARGE BINARY (aka BINARY LARGE OBJECT) | DATETIME | BOOLEAN | N/A |
| PostgreSQL | Static | SMALLINT (16-bit), INTEGER (32-bit), BIGINT (64-bit) | REAL (32-bit), DOUBLE PRECISION (64-bit) | DECIMAL, NUMERIC | CHAR, VARCHAR, TEXT | BYTEA | DATE, TIME (with/without TIMEZONE), TIMESTAMP (with/without TIMEZONE), INTERVAL | BOOLEAN | ENUM, POINT, LINE, LSEG, BOX, PATH, POLYGON, CIRCLE, CIDR, INET, MACADDR, BIT, UUID, XML, arrays |
| RDM Embedded | Static | tinyint, smallint, integer, bigint | real, float, double | N/A | char, varchar, wchar, varwchar, long varchar, long varwchar | binary, varbinary, long varbinary | date, time, timestamp | bit | N/A |
| RDM Server | Static | tinyint, smallint, integer, bigint | real, float, double | decimal, numeric | char, varchar, wchar, varwchar, long varchar, long varwchar | binary, varbinary, long varbinary | date, time, timestamp | bit | rowid |
| SQLite | Dynamic | INTEGER (64-bit) | REAL (aka FLOAT, DOUBLE) (64-bit) | N/A | TEXT (aka CHAR, CLOB) | BLOB | N/A | N/A | N/A |
| UniData | Dynamic | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| UniVerse | Dynamic | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Xeround Cloud Database | Static | TINYINT (8-bit), SMALLINT (16-bit), MEDIUMINT (24-bit), INT (32-bit), BIGINT (64-bit) | FLOAT (32-bit), DOUBLE (aka REAL) (64-bit) | DECIMAL | CHAR, BINARY, VARCHAR, VARBINARY, TEXT, TINYTEXT, MEDIUMTEXT, LONGTEXT | TINYBLOB, BLOB, MEDIUMBLOB, LONGBLOB | DATETIME, DATE, TIMESTAMP, YEAR | BOOLEAN (aka BOOL) = synonym for TINYINT | ENUM, SET |
| Type system | Integer | Floating point | Decimal | String | Binary | Date/Time | Boolean | Other |
Read more about this topic: Comparison Of Relational Database Management Systems
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