is there any side effect of creating multiple database files for a single android application?

is there any side effect of creating multiple database files for a single android application ?

why do i need to do this ?

Because i am creating an application which uses a common module used in multiple other projects.

that common module has his own DB file lets call it "core.db" which contain some tables for example [table1, table2], and my application need to have more tables to run correctly for example [table 3 , table 4].