| Class | Ensembl::Core::ExternalDb |
| In: |
lib/ensembl/core/activerecord.rb
|
| Parent: | CoreDBConnection |
The ExternalDb class provides an interface to the external_db table. This table contains references to databases to which xrefs can point to
This class uses ActiveRecord to access data in the Ensembl database. See the general documentation of the Ensembl module for more information on what this means and what methods are available.
embl_db = ExternalDb.find_by_db_name('EMBL')
puts embl_db.xrefs.length.to_s
The ExternalDb#find_all_by_display_label method returns all external databases that have this label. There should normally be no more than one. If no databases are found with this name, this method returns an empty array.
The ExternalDb#find_by_display_label method returns a database that has this label. If no databases are found with this name, this method returns nil. empty array.