From the standpoint of anthropology and sociology, dating is linked with other institutions such as marriage and the family which have also been changing rapidly and which have been subject to many forces, including advances in technology and medicine.
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It could be made more obvious why the choice of which relations are base and which are not matters.
This would lead to an understanding of view updating as being simply a matter of inverting functions that the data design expresses.
This is an important book because some of its conclusions are correct in a logical sense.
But it either needs fewer chapters or an additional chapter to explain in formal terms why there are so many chapters.
That means they should be updatable, just as "real" or base tables are.