Documentation

Each data source subclasses the RelHandle. This is basically an // identifier of the relation. This is the "value" of a relation which // resides in a record. i.e. it is like an OID. Each data src will // subclass this to provide its own specific kind of handle. // // NOTE: This can have _NO_ virtual methods, since we want it to // be simply a struct (no virtual table ptrs) that can be copied into // and out of a record. Further, we want to make sure that this is // completely aligned on a word boundary to avoid problems inside records. //