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You can still have an update anomaly in an append-only setting. Teacher changes name (by submitting a change-of-name form) - now you need to replace all the class lists.
"Accountants Don’t Use Erasers" I was about to say 'scientist too' but they do use chalkboard erasers... only when cons cells aren't reachable anymore though.
> "Normalization’s goal is to eliminate update anomalies. Normalization is not necessary in an immutable data set. The only reason to normalize immutable DataSets may be to reduce the storage necessary." You can still have an update anomaly in an append-only setting. Teacher changes name (by submitting a change-of-name form) - now you need to replace all the class lists.
the CAP theorem only applies when dealing with mutable shared state. that's reason enough to go immutable.
the CAP theorem only applies when dealing with mutable shared state. that's reason enough to go immutable.
> "Normalization’s goal is to eliminate update anomalies. Normalization is not necessary in an immutable data set. The only reason to normalize immutable DataSets may be to reduce the storage necessary." You can still have an update anomaly in an append-only setting. Teacher changes name (by submitting a change-of-name form) - now you need to replace all the class lists.
the class list would be rendered by looking up the teacher's name. a rendering can be cached with a timestamp (it was valid as of this time) and then the most recent render can be stored. by setting a dirty flag whenever data changes, you can update dependencies when they are fetched and then memoize the results.
the CAP theorem only applies when dealing with mutable shared state. that's reason enough to go immutable.
> "Normalization’s goal is to eliminate update anomalies. Normalization is not necessary in an immutable data set. The only reason to normalize immutable DataSets may be to reduce the storage necessary." You can still have an update anomaly in an append-only setting. Teacher changes name (by submitting a change-of-name form) - now you need to replace all the class lists.