The product category is to put different categories in different tables or in one table. you only need to mark the category.

Product classification is to put different categories in different tables or in one table. you just need to mark the classification tag, so the technical experts can ask a question ~

When the product category is put in different categories in different tables, or in a table, you only need to mark the category mark ?~

I don't know if this is a conventional approach. I used select to make a selection classification, marking 0, 1, and 2, then, different types are entered into different SQL statements and placed into different tables.
Later, I found that it is also possible to put it in a table. as long as the tag is different, it can also be distinguished during presentation.

Beginner, ugly ~ Thank you !~

Reply to discussion (solution)

You can put it in a table. if there are more than two levels of classification, in addition to level1 (level 1) lever2 (Level 2), you must also note that Level 2 fid (parent level id) = a Level 1 id, level 1 fid = 0

Thank you very much. this is generally the case. it is not used for classification in different tables. it is used for different functions, such as user tables, product tables, and news tables.
This is the second-level classification ~ Try again later ~

I posted the post here for the first time. I have already posted the post. I wonder if it is successful ~~