Attribute Type, Precision and Scale

You can specify the attribute type, precision, and scale using the following values.

Attribute Type

Description

VARCHAR2 (n)

Variable length character string -> relations

NUMBER (p,s)

Number having precision p and scale s -> relations

DATE

Valid date range

BFILE

Pointer to binary file on disk

BLOB

Binary large object

CHAR

Fixed length character data CHAR(20)

CLOB

Character Large Object

Long

Long

NChar

National

NCLOB

National Character Large Object

Nvarchar2 (n)

National Character.

Raw (n)

Raw binary data

TimeStamp (n)

Number of digits in the fractional part of the SECOND date time field

For more information refer to Oracle Administrator's Guide.