Hi guys,My company is a longtime user of Marketo. We are currently looking at re-implementing the way we have things set up and are curious if there is a concept of using multiple databases within Marketo? If not, we are wondering if there is a way to use custom objects to accomplish the same goal.Our problem: We have several systems that use the same instance of Marketo. Sometimes, these systems are simultaneously used by those we are marketing to (the end-user). There is potentially a few issues. It is possible for our end-user to enter invalid emails upon the creation of a lead (let's say for example that they enter test@test.com). When another user enters test@test.com, both of our leads get tied to this test@test.com record in Marketo. These are actually not the same user and within Marketo, the two end up getting merged. Also, say that the user enters a valid email and exists in multiple systems. When we sync to Marketo, information that might be relevant to a Campaign in one sys