Why is this design required for the three Term tables of wordpress?

Why is this design required for the three Term tables of wordpress? Can wp_terms and wp_term_taxonomy be merged into a table? What are the benefits of this design? The query also needs to be checked multiple times. wp_terms {code...} wp_term_relationships {code...} why is the design of the three Term tables of wp_term_taxonomy {... wordpress? Wp_termsAnd Wp_term_taxonomyCan it be merged into a table? What are the benefits of this design? Query is performed multiple times.

Wp_terms

Term_id: category IDname: category name slug: scaling name term_group: unknown

Wp_term_relationships

Object_id: corresponding article ID/link IDterm_taxonomy_id: corresponding classification method IDterm_order: Sorting

Wp_term_taxonomy

Term_taxonomy_id: classification method IDterm_id: taxonomy: classification method (category/post_tag) description: unknown parent: parent classification method IDcount: Number of articles Statistics

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Why is this design required for the three Term tables of wordpress?Wp_termsAndWp_term_taxonomyCan it be merged into a table? What are the benefits of this design? Query is performed multiple times.

Wp_terms

Term_id: category IDname: category name slug: scaling name term_group: unknown

Wp_term_relationships

Object_id: corresponding article ID/link IDterm_taxonomy_id: corresponding classification method IDterm_order: Sorting

Wp_term_taxonomy

Term_taxonomy_id: classification method IDterm_id: taxonomy: classification method (category/post_tag) description: unknown parent: parent classification method IDcount: Number of articles Statistics

Wp_term_taxonomy is a tree-level structure, so term_taxonomy_id is required,
Wp_terms is a classification table. this id is often used for classification and cannot be saved. Therefore, two half tables are created.

Indeed. When I was in contact with the e-mall project, the project form had been intolerable, and I could clearly make one, but split many single tables. Now, my practice is to write a view on this basis and combine the form into a new table. it is much easier to use it. I hope it will help you ~

I do not understand why these popular website creation programs use so many data tables. if I designed it myself, there would be no more than 15 data tables.
Of course, if the data volume in a single table is too large, it will be quite pear for MySQL.
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