The Optical Subsystem is included with the database server and stores simple large objects (TEXT and BYTE data) on optical platters known as WORM optical media. The optical media are the removable optical platters that contain data. The Optical Subsystem includes a specific set of SQL statements that allow you to store and retrieve data stored on optical disks.
The Optical Subsystem does not store character large object (CLOB) and binary large object (BLOB) data types, also known as smart large objects.
For more information, see the IBM Informix Optical Subsystem Guide.
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