This table/command contains column(s) that can be accessed via an ISequentialStream interface. Not all providers, however, ...

// This table/command contains column(s) that can be accessed
// via an ISequentialStream interface.  Not all providers, however,
// support this feature, and even those that do support it, are
// often limited to just one ISequentialStream per rowset.
// If you want to use streams in this accessor, use the sample
// line(s) of code below, and set the DBPROP_ISequentialStream
// rowset propery to true.  You can than use the Read() method
// to read the data, or Write() method to write the data (note
// that this requires that you change the STGM_READ stream property
// to STGM_WRITE or STGM_READWRITE).  For more information on
// ISequentialStream binding see the documentation