Describes the access modes supported by a database.
A named database supports three access modes:
The first two access modes are implemented through a file server session which provides the necessary file access modes while shared read/write access must be done through the DBMS server.
Creating a database through the Create() and Replace() member
functions of RDbNamedDatabase, initiates client-side access
to the database and does not require a connection to the DBMS server.
RDbNamedDatabase offers two Open() functions,
one for client-side access and the other for client-server access. Client-side
access is preferred over client-server access as data retrieval is faster
than indirecting via the DBMS server.