Now that we have presented all of the essentials of how contacts work, we can get to the business of how the personal profile is implemented in 4.0.
A personal profile works just like any other contact, except that there is only one personal profile contact. That is the singular you, on your device.
However, as an implementation detail, all the data pertaining to the singular personal profile contact is maintained in a separate database called
profile.db. Our research shows that this database has a structure identical to
contacts2.db. This means you already know what relevant tables are available and what the columns of each table are.
Being a single contact, the aggregation is lot more straightforward. Every ...