Questions about Discuz and DVBBS databases

For some database questions about Discuz and DVBBS, we can see that Discuz or other open-source websites have a long field of some data tables in their databases, with 50 fields. I just want to ask an experienced friend about the database design of these websites for reference .? Will it not be their source database .? ^ _ ^, Which can be used for reference, especially for beginners who want to understand their databases. you can refer to some database questions about Discuz and DVBBS.
When we see Discuz or other open-source websites, some data tables in their databases have long fields, with 50 fields.

I just want to ask an experienced friend about the database design of these websites for reference .? Will it not be their source database .? Pai_^

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It can be used for reference, especially for beginners of databases,
Understanding their database can learn a lot from it.
Moreover, their databases have been verified by countless websites and are secure and reliable.

However, these databases are not suitable for large databases,
Therefore, it is important to use it flexibly based on your understanding.
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Flexible application is enough!