Closed msesboue closed 2 years ago
For a table Person with columns (first_name, last_name, birth_date, description), it's possible that the primary key may be a compound key, e.g. (first_name, last_name, birth_date) to uniquely identify a row (if there is no "ID" column). So in this case, the "last column" would be birth_date.
Thank you It makes sense now :)
Chap 2, page 34, section 2.3.1, paragraph Direct Mappings to RDF Graphs, I fail to understand what "the last column in the primary key" refers to. Could you give an example?