With the help of a diagram defines the typical element modules of a DBMS?

The functional elements of a database system can be widely divided into:
1) Storage manager and 2) query processor

1) Storage manager components include:
(i) Authorization and integrity manager to test integrity constraints and authorized access to data.
(ii) Transaction manager to ensure in which database remains in a consistent state.
(iii) File manager to manage disk storage space.
(iv) Buffer manager is responsible for buffering data.

2) The query processor component includes:
(i) DDL interpreter to interpret DDL statements
(ii) DML compiler that translation DML queries into query evaluation plan for query evaluation engine.
(iii) Query evaluation engine execute low level instructions produced through DML compiler.