Abstract Data Type (Abstract Data Type) ADT
It consists of a value domain and a set of operations defined on the value field.
To discuss the abstract data type, discussions 1. Process language, user-defined data types, with functions, using inherent data types to represent and down abstract data types. 2. Object-oriented language is achieved by subject.
Basic operation: Insert, delete, update, look up, sort.
The data structure includes definition of data, logical structure, storage structure, and operation thereof in data.
