Абстрактный тип данных может быть создан с помощью a. Create datatype b. Create definetype c. Create type d . Создание данных
Примеры кода
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Abstract Data type (ADT) is a type (or class) for objects whose behaviour is
defined by a set of value and a set of operations.
The definition of ADT only mentions what operations are to be performed
but not how these operations will be implemented.