Large Object (LOB) data types that refers to the large data items like text, graphic images, video clips and also sound waveforms. LOB data types that allow efficient, random, piecewise access to the data. some of the predefined PL/SQL LOB data types:
- BFILE
This is used to store the large binary objects in the operating system files that is outside the database. This is system independent that cannot exceed 4 gigabytes (GB).
- BLOB
It is used to store large Binary objects in the data base. This size ranges 8 to 128 terabytes (TB).
- CLOB
This is used to store large blocks of character data in the database and its size ranges from 8 to 128 TB.
- NCLOB
This is used to store the large blocks of NCHAR data in the database. And its size ranges from 8 to 128 TB.