What is secondary development?
Secondary development, to put it simply, is to customize and modify the existing software, expand the functions, and then achieve the functions and effects you want. Generally speaking, the original software will not be changed. The kernel of the system. (Recommended learning: PHP video tutorial)
Why do we need secondary development?
With the continuous development of information technology, a series of excellent open source works have emerged in the IT industry, and their authors are either individuals, project teams, or software companies.
Selecting and applying these excellent open source software, and carrying out secondary development that meets business needs on this basis, will not only save information costs (time costs and development costs) for enterprises, but also bring more benefits Technical guarantee.
This is what we often hear: standing on the shoulders of giants, you will see further. Therefore, many domestic companies need secondary development talents.
How to do secondary development?
First, you must have a language foundation for the language used in this open source product. Being able to understand the code is the most basic.
Second, you need to be familiar with the functions and uses of this open source product. Because you are familiar with it, you will know a requirement, what you want to change, and what comes with the system. It probably takes How to change.
Third, you must be familiar with the data structure, code structure, system framework structure of this open source product, where the core is, and where the subsidiary functions are. To put it simply, it means familiarity with databases, code logic, and file directories.
Fourth, according to your needs, then use the core of open source products to expand and modify the system to meet your needs.
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