Default methods and internal functions
                         Default methods and internal functions
dbAppendTable            Appends data to a database table
dbClearResult            Clears resources associated with a query result
dbColumnInfo             Returns type information about a result column
dbConnect                Connect to a database
dbConnectionInfo         Returns a list of connection status attributes
dbDisconnect             Closes a database connection
dbGetQuery               Submit a query string and fetch results
dbGetResult              Fetch results from a query
dbListTables             Lists database tables
dbReadTable              Reads a table into a data frame
dbReconnect              Reopens a connection to a database
dbResultInfo             Returns information about a query result
dbSendQuery              Submits a query string to the database backend
dbWriteTable             Writes a data frame to a database table
Utility functions        Utility functions
