| 114 | 114 | One nuance which should be pointed out is that in FIGURE 25 Contributions are shown as if they are literally a set of deltas, i.e. exactly the changes which occur to the record. Thus, the first Contribution is the set {CIw, Ca1, Cc1, Cd1} and so on. Whether this is literally true depends on the construction of the persistence solution. In some situations, some CIs may be updated by the user viewing the current list and entering just the changes - the situation shown in FIGURE 25; in others, the system may provide the current state of these CIs for editing by the user, and submit the updated versions, as shown in FIGURE 26. Some applications may do both, depending on which CI is being updated. The internal versioning implementation may or may not generate deltas as a way of efficient storage. |
