RTblSumInfo is an interface-specific table; its columns correspond to the properties exposed by the ISummaryInformation interface. By default, no class of the Microsoft® Repository Type Information Model (RTIM) implements ISummaryInformation. Thus, the Repository database does not, by default, include the table RTblSumInfo. Instead, Repository omits the table from the database to save space. However, as soon as you insert into the repository any class that implements ISummaryInformation, Repository creates the table.
| Column Name | Data Type | Description |
| IntID | RTIntID | The internal identifier of the class. |
| Z_BranchID_Z | RTBrID | Indicates the branch of the version graph containing the range to whose items the property values in this row apply. |
| Z_VS_Z | RTVerID | A version-within-branch identifier indicating the lower bound of the range to whose items the property values in this row apply. |
| Z_VE_Z | RTVerID | A version-within-branch identifier indicating the upper bound of the range to whose items the property values in this row apply. |
| Comments | RTLongString | A field used for comments. |
| ShortDesc | RTLongString | The description of the object. |