DBI (version 0.3.0)

DBIObject-class: DBIObject class.

Description

Base class for all other DBI classes (e.g., drivers, connections). This is a virtual Class: No objects may be created from it.

Implementation notes

An implementation MUST provide methods for the following generics:

• dbGetInfo.

It MAY also provide methods for:

• summary. Print a concise description of the object. The default method invokesdbGetInfo(dbObj)and prints the name-value pairs one per line. Individual implementations may tailor this appropriately.

Details

More generally, the DBI defines a very small set of classes and methods 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.

See Also

Other DBI classes: DBIConnection-class; DBIDriver-class; DBIResult-class

Examples

drv <- dbDriver("MySQL")
con <- dbConnect(drv, group = "rs-dbi")
res <- dbSendQuery(con, "select * from vitalSuite")
is(drv, "DBIObject")   ## True
is(con, "DBIObject")   ## True
is(res, "DBIObject")