MDAC 2.5 SDK - OLE DB Programmer's Reference
Appendix C: OLE DB Properties
Property group: Data Source Information
Property set: DBPROPSET_DATASOURCEINFO
Type: VT_I4
Typical R/W: R
Description: Maximum Row Size
Indicates the maximum length of a single row in a table. If there is no specified limit or the limit is unknown, this value is set to zero.