Share data from one database to two different db For example I have:

database_root (with "table1_test"..)


and then I have (but those tables doesn't have "table1_test")

db_1
db_2


I want to share the data of database_root to db_1 and 2, and if someone is looking for data on table1_test on db_1 or 2... automatically the data is collected from database_root.

I don't really know if it's complicated, because I don't know so much of MySQL so... tell me if it's possible (if it's possible please tell me how to) or no.
SELECT a.this, b.that
     FROM database_root AS a
     JOIN db_1 AS b  ON a.x = b.x;