dbConnect() returns an S4 object that inherits from DBIConnection.
This object is used to communicate with the database engine.
format() method is defined for the connection object.
It returns a string that consists of a single line of text.
DBI recommends using the following argument names for authentication
user for the user name (default: current user)
password for the password
host for the host name (default: local connection)
port for the port number (default: local connection)
dbname for the name of the database on the host, or the database file
The defaults should provide reasonable behavior, in particular a
local connection for
host = NULL. For some DBMS (e.g., PostgreSQL),
this is different to a TCP/IP connection to
In addition, DBI supports the
bigint argument that governs how
64-bit integer data is returned. The following values are supported:
"integer": always return as
integer, silently overflow
"numeric": always return as
numeric, silently round
"character": always return the decimal representation as