7. Software maintenance

After the software has been tested and delivered to users, the software we have created will be officially used, but the software in use will also have such problems! What should we do? This requires us to maintain and maintain the software we make. This is also an important stage in the software life cycle! Below, I will briefly talk about software maintenance:

 

First, let's take a look at the definition of software maintenance:

 

Then, what factors affect the difficulty of maintenance:

 

 

For these things, we need to maintain the software strategically. Next I will talk about the general maintenance strategy:

 

 

Finally, I would like to talk about the maintenance cost, which is a matter of great concern to everyone. As we all know, the higher the maintenance workload, the higher the cost! Therefore, we only need to calculate the workload:

 

 

 

The above are the relevant theoretical knowledge of software maintenance: Finally, let's talk about the software maintenance flowchart. This diagram is what we usually observe in our maintenance work. You can just analyze the steps below: