Viewing BLOB Data on a Green Screen Recently I had to write a routine that printed a signature via a PC printer. The signature data is stored on the IBM i in a database file. The signature image is stored as a .BMP (bitmap) image, so you might wonder how it is stored in a field in a database file. The short answer: a BLOB. Binary Large Object  A Binary Large Object or "BLOB" is a family of field types known as Large Object or LOB fields. The two most ...

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