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The RAW
data type stores data that is not to be interpreted (that is, not explicitly converted when moving data between different systems) by Oracle Database. The RAW
data type is intended for binary data or byte strings.
The syntax for specifying RAW
data is as follows:
RAW (size)
where you must specify a size up to the maximum of 2000 bytes
RAW
is a variable-length data type, however Oracle Net (which connects user sessions to the instance) and Oracle Database utilities do not perform character conversion when transmitting RAW
data.
When Oracle automatically converts RAW
data to and from text data, the binary data is represented in hexadecimal form, with one hexadecimal character representing every four bits of RAW data. For example, one byte of RAW data with bits 11001011
is displayed and entered as CB
.