dbConnect
From DBI v0.5-1
by Kirill Müller
Create a connection to a DBMS
Connect to a DBMS going through the appropriate authorization procedure. Some implementations may allow you to have multiple connections open, so you may invoke this function repeatedly assigning its output to different objects. The authorization mechanism is left unspecified, so check the documentation of individual drivers for details.
Usage
dbConnect(drv, ...)Arguments
- drv
- an object that inherits from
DBIDriver, or an existingDBIConnectionobject (in order to clone an existing connection). - ...
- authorization arguments needed by the DBMS instance; these
typically include
user,password,dbname,host,port, etc. For details see the appropriateDBIDriver.
Details
Each driver will define what other arguments are required, e.g.,
"dbname" for the database name, "username", and
"password".
Value
-
An object that extends
DBIConnection in a
database-specific manner. For instance dbConnect(RMySQL::MySQL()) produces
an object of class MySQLConnection. This object is used to direct
commands to the database engine.
See Also
dbDisconnect to disconnect from a database.
Other DBIDriver generics: DBIDriver-class,
dbDataType, dbDriver,
dbGetInfo, dbIsValid,
dbListConnections
Examples
library(DBI)
# SQLite only needs a path to the database. Other database drivers
# will require more details (like username, password, host, port etc)
con <- dbConnect(RSQLite::SQLite(), ":memory:")
con
dbListTables(con)
dbDisconnect(con)
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