R: Collect information about the package annotation DB

org.At.tair_dbconn {org.At.tair.db}

R Documentation

Collect information about the package annotation DB

Description

Some convenience functions for getting a connection object to (or collecting information about) the package annotation DB.

Usage

  org.At.tair_dbconn()
  org.At.tair_dbfile()
  org.At.tair_dbschema(file="", show.indices=FALSE)
  org.At.tair_dbInfo()

Arguments

`file`	A connection, or a character string naming the file to print to (see the `file` argument of the `cat` function for the details).
`show.indices`	The CREATE INDEX statements are not shown by default. Use `show.indices=TRUE` to get them.

Details

org.At.tair_dbconn returns a connection object to the package annotation DB. IMPORTANT: Don't call dbDisconnect on the connection object returned by org.At.tair_dbconn or you will break all the AnnDbObj objects defined in this package!

org.At.tair_dbfile returns the path (character string) to the package annotation DB (this is an SQLite file).

org.At.tair_dbschema prints the schema definition of the package annotation DB.

org.At.tair_dbInfo prints other information about the package annotation DB.

Value

org.At.tair_dbconn: a DBIConnection object representing an open connection to the package annotation DB.

org.At.tair_dbfile: a character string with the path to the package annotation DB.

org.At.tair_dbschema: none (invisible NULL).

org.At.tair_dbInfo: none (invisible NULL).

Examples

  ## Count the number of rows in the "genes" table:
  dbGetQuery(org.At.tair_dbconn(), "SELECT COUNT(*) FROM genes")

  ## The connection object returned by org.At.tair_dbconn() was
  ## created with:
  dbConnect(SQLite(), dbname=org.At.tair_dbfile(), cache_size=64000,
  synchronous=0)

  org.At.tair_dbschema()

  org.At.tair_dbInfo()

[Package org.At.tair.db version 2.10.1 Index]