High aggregation, low coupling, and low coupling

High aggregation, low coupling, and low coupling

This is a concept in software engineering.

First, you must know that a software is composed of multiple subprograms, and a program is composed of multiple modules (methods!

Cohesion refers to the closeness between modules in a program. Coupling is the closeness between various external programs (subprograms ..

So it is easy to understand, why is it high cohesion? The closer the relationship between modules, the fewer errors! Low coupling? The more complex the relationship between subprograms, more unexpected errors will occur! It will cause a lot of trouble for future maintenance work!

Similarly, this idea can be used to build an enterprise data warehouse. Make the following designs:

1. Put the relevant business data and granularity data together.

2. Separate data based on the access heat to achieve performance optimization.

What is high aggregation and low coupling?

This is a concept in software engineering.
First, you must know that a software is composed of multiple subprograms,
A program consists of multiple modules (methods!
Cohesion refers to the closeness between various modules in the program,
Coupling is the closeness between various external programs (subprograms.
So it is easy to understand, why is it high cohesion? The closer the relationship between modules, the fewer errors! Low coupling? The more complex the relationship between subprograms, more unexpected errors will occur! It will cause a lot of trouble for future maintenance work!

What is the principle of high aggregation, low coupling, and encapsulation?

This is mainly from the perspective of division of object responsibilities.
Encapsulation is to put some functions in one object.
High aggregation means that the functions of an object are all done internally and tightly integrated.
Low coupling means that the dependencies between objects should be loose. Do not hold the entire body
Only in this way can the system be conveniently scaled up.