"db.table"A sub-class of '>db.data.frame which points to
tables in the database
Objects can be created by calls of db.data.frame or
as.db.data.frame
As a sub-class, this class has all the slots of
'>db.data.frame. Here we list the extra slots.
.key:Object of class "character". The name of the primary key
column name. Currently only one primary key column is
supported. This value can be set during the creation of the object
when using the function db.data.frame. The functions
key and key<- can be used to get and
set this value.
.dim:Object of class "numeric". A two-integer array, the
dimension information of the table that this object points to. The
first
integer is the total row number of the table, and the second is
the number of columns of the
table. dim,db.table-method gets this value.
db.data.frame creates a db.data.frame object.
as.db.data.frame converts db.Rquery object,
data.frame, or a data file into a db.data.frame object
and at the same time creates a new table in the database.
'>db.data.frame is the superclass.
'>db.view is the other subclass of
'>db.data.frame