Seems to me that with the definitions given, structures and objects aren't opposites, they're corollaries. A database table is both a data structure and a coll

Seems to me that with the definitions given, structures and objects aren't opposites, they're corollaries. A database table is both a data structure and a collection of functions for accessing/manipulating it (SQL). An ORM maps between the "Object Oriented" objects and the "Relational" objects that are tables. Interesting the author thinks about the the api exposed by a table as the "data structure" itself rather than an object. Pragmatically, we tend to refer to the "objects" at the lower level of abstraction as data structures. Is [...] a function that defines an array, or the array itself?