What is BFILE in oracle.

I have one code and in that someone used BFILE,
What exactly this BFILE means, and whats the use of this.
Please explain in detail
Regards
Agrawal's

The BFILE datatype enables access to binary file LOBs that are stored in file systems outside the Oracle database. A BFILE column or attribute stores a BFILE locator, which serves as a pointer to a binary file on the server's file system. The locator maintains the directory alias and the filename.
You can change the filename and path of a BFILE without affecting the base table by using the BFILENAME function.Binary file LOBs do not participate in transactions and are not recoverable. Rather, the underlying operating system provides file integrity and durability. The maximum file size supported is 4 gigabytes.
The database administrator must ensure that the file exists and that Oracle processes have operating system read permissions on the file.
The BFILE datatype enables read-only support of large binary files. You cannot modify or replicate such a file. Oracle provides APIs to access file data. The primary interfaces that you use to access file data are the DBMS_LOB package and the OCI.
For more information please refer oracle documentation.
Cheers

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