Creation of simple large objects
When simple-large-object data is written to disk, the row to which it belongs might not exist yet.
During an insert, for example, the simple large object is transferred before the rest of the row data. After the simple large object is stored, the data row is created with a 56-byte descriptor that points to its location. For a description of how simple large objects are stored physically, see the structure of a dbspace blobpage in the disk storage and structure chapter of the IBM® Informix® Administrator's Reference.