Simeon,
In the sample GDB, we model inspection data as point records that link to the source asset. You could also use the same schema but as a table. In ArcMap, you can define a relationship between between the manholes and the inspection data(either as a point layer or a table). When you click ID on the manhole, you can expand the tree(+ sign) and see all related inspection records. This works in the ID in ArcReader, ArcMap and ArcPad. ArcPad 8 supports releated tables.