SQL Server database video summary

It took more than half a month to read the database video of instructor Yan jianling of Zhejiang University. Before watching the video, I used to receive a student information management system. When I was studying the student information management system, I always knew the database. The video from Dr. Yan jianling is not appealing to you.

In February June, I first came into contact with the database and made five small instances. I copied the five instances that have nothing to do with the basics of VB. I don't know what's going on. When reading the classic book of SQL getting started, you need to finish reading it in one week. My God. I can't finish it. It takes more than half a year to read a fantasy novel.

No matter how the plan is determined, anyway. It took me half a month to finish reading SQL entry classics. Although, they only understand. However, when I watched the video from instructor Yan, I felt deeply. I have read all of these. It instantly feels friendly. ---- The resonance of knowledge is indeed highly efficient.

The following figure shows my understanding of the database.

is superficial. Please give me some advice.