Multiple services using the same database will typically end poorly. When schemas or indexes change, how will that affect all of the different services? How do

Multiple services using the same database will typically end poorly. When schemas or indexes change, how will that affect all of the different services? How do their read/write patterns differ? When one service needs to scale, will the additional connections starve the other services? And worse, if a service ends up moving to a different team or department, who controls the database? I prefer a service that fronts the database. Swap the database, scale it, whatever, and clients keep going.