Conceptualization by name of connection
from Diary 2023-10-14
Conceptualization by name of connection
The "set of operations" and the "set of connections"
masuda220 Abstract and conceptual data models are not the same.
The abstract data model abstracts data types into a set of operations.
Conceptual data models are conceptualized by the name of the data type and the name of the connection between data types.
masuda220 In this sense, object-oriented programming is a method of implementing an abstract data model.
A different approach from the data model, which models data in terms of relations.
The abstract data model and the relational data model overlap in some areas but do not match in many areas.
>masuda220: A module is a set of operations.
What kind of operations should be collected in a module? How to describe the specifications (name, pre-conditions, post-conditions) of the operations.
Data abstraction, which defines (exposes) a data type as a set of operations, is one of the basic methods of module design.
Class and method design is a technique of modularization through data abstraction.
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