dbms is a collection of data in a database
rdms is a collection of related data in a database

in rdbms we have relations of tables say primary 
key ,foreign keys relation ,,that involves refrential 
integrity and normalication like concepts
where as 
dbms is just collection of tables that dont have relations 
and dependencies

DBMS : Client Side processing 
       File Level Locking 
       Network traffic is High            
       Distributed Network not Supported
       Nomenclature
       Concept of File
RDBMS : Server Side Processing
       Row Level Locking 
       Network traffic is Low            
       Distributed Network  Supported
       Nomenclature
       Concept of Table

Explain the DBMS, RDBMS?

DBMS: 

         DBMS is Data Base Management System. It is a 
collection of data in a database. DBMS is just collection 
of tables that dont have relations and dependencies.Client 
Side processing File Level traffic is High Distributed 
Network not supported Nomenclature concept of File. Dbms 
won't allow you share the data server to clint.Only one 
user can access the database at a time in DBMS.ADBMS is 
enabled by vector field and is "one"dimensional.

RDBMS:

        RDBMS is Relational Data Base Management System.
RDBMS is a collection of related data in a database.In 
RDBMS we have relations of tables say primary key ,foreign 
keys relation ,,that involves refrential integrity and 
normalication like concepts where as Server Side Processing 
Row Level Locking Network traffic is Low Distributed 
Network Supported Nomenclature Concept of Table.But in 
RDBMS we can share data server to client.But RDBMS allows 
simultaneous access of users to the database. RDBMS is 
enabled nu static "2"-dimensional tables.