Bio::Search::DatabaseI - Interface for a database used in a sequence search


Bio::Search::DatabaseI objects should not be instantiated since this module defines a pure interface.

Given an object that implements the Bio::Search::DatabaseI interface, you can do the following things with it:

    $name = $db->name();

    $date = $db->date();

    $num_letters = $db->letters();

    $num_entries = $db->entries();


This module defines methods for an object that provides metadata information about a database used for sequence searching.


Mailing Lists

User feedback is an integral part of the evolution of this and other Bioperl modules. Send your comments and suggestions preferably to one of the Bioperl mailing lists. Your participation is much appreciated.                  - General discussion  - About the mailing lists


Please direct usage questions or support issues to the mailing list:

rather than to the module maintainer directly. Many experienced and reponsive experts will be able look at the problem and quickly address it. Please include a thorough description of the problem with code and data examples if at all possible.

Reporting Bugs

Report bugs to the Bioperl bug tracking system to help us keep track the bugs and their resolution. Bug reports can be submitted via the web:           


Steve Chervitz <>

See the FEEDBACK section for where to send bug reports and comments.


Copyright (c) 2001 Steve Chervitz. All Rights Reserved.


This software is provided "as is" without warranty of any kind.


The rest of the documentation details each of the object methods.


 Usage     : $name = $db->name();
 Purpose   : Get the name of the database searched.
 Returns   : String
 Argument  : n/a


 Usage     : $date = $db->date();
 Purpose   : Get the creation date of the queried database.
 Returns   : String
 Argument  : n/a


 Usage     : $num_letters = $db->letters();
 Purpose   : Get the number of letters in the queried database.
 Returns   : Integer
 Argument  : n/a


 Usage     : $num_entries = $db->entries();
 Purpose   : Get the number of entries in the queried database.
 Returns   : Integer
 Argument  : n/a