Base class for all other DBI classes (e.g., drivers, connections). This is a virtual Class: No objects may be created from it.
More generally, the DBI defines a very small set of classes and generics that
allows users and applications access DBMS with a common interface. The
virtual classes are
DBIDriver that individual drivers extend,
DBIConnection that represent instances of DBMS connections, and
DBIResult that represent the result of a DBMS statement. These three
classes extend the basic class of
DBIObject, which serves as the root
or parent of the class hierarchy.
An implementation MUST provide methods for the following generics:
It MAY also provide methods for:
summary(). Print a concise description of the
object. The default method invokes
dbGetInfo(dbObj) and prints
the name-value pairs one per line. Individual implementations may
tailor this appropriately.