object residing place

dear all,
i would like to confirm the above.
assume that database(sql server) in enterprise server.
1) business data is stored in 1 place which is the database?
2) central object. the replicated object will be sitting in local in spec folder as tam file by client package. whereas the rdb format is sitting in database?
3) i was told part of the central object also in deployment server, may i know in deployment server is kept in tam format or rdb format?
4) also if server package to enterprise server, the format is in tam or rdb?
5) i must think differently for format rdb and tam in enterprise server. the database is not part of enterprise server. it is a database storage. so the server package to enterprise server is in tam but stored in database is rdb, rite?
6)control object. sitting in database only?

thanks alot

rgds
ben