Database - java design table prefix meaning

Question

java Why does the Mybatis system add table prefixes when designing tables? Are there any disadvantages in not adding them?

Thanks

Answer 1

Obviously to distinguish projects. When there are many database tables, table prefixes can be used to achieve faster search, maintenance, etc.

Answer 2

This is really a poor design. Different databases should be used to distinguish projects!

Answer 3

This is a habit developed by old programmers for future generations haha

Answer 4

Generally related to business logic.

For example, system-related tables sys_user, sys_role, etc.
Query related tables query_money, query_time, etc.