Techopedia explains Binary Large Object (BLOB)
Binary
large objects are primarily used in all database software. Generally,
database software classifies binary large objects into two types:
semi-structured data and unstructured data. XML files are categorized as
semi-structured data, whereas images and multimedia data are
unstructured data types. Both of these BLOBs are generally not
interpretable by the database.
BLOBs are
used mainly for storing pictures, sounds and multimedia files, so they
have a comparatively larger size than most data types and can contain up
to gigabytes of data. Besides databases, the term BLOB may also refer
to a visual image in computer graphics that has a unique shape.
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