Misc. Reference Manual Pages              MAP_DB(September, 1999)



NAME
     map_db - read a FASTA (0), GENBANK flat file (1) PIR/VMS (5)
     or  GCG binary (6) sequence database and produce the offsets
     necessary for efficient memory mapping.

SYNOPSIS
     map_db [-n] filename | "filename libtype"

DESCRIPTION
     map_db _f_i_l_e_n_a_m_e reads the sequence database in _f_i_l_e_n_a_m_e  and
     produce  a new file _f_i_l_e_n_a_m_e._x_i_n with the offset information
     necessary for efficient memory mapping.

     The programs in fasta version 32t08 can  use  memory  mapped
     i/o  to  load  sequence  database  files and read them effi-
     ciently.  Memory mapping is used only if a  "._x_i_n"  file  is
     available.  The "._x_i_n" file is created by map_db.

     In addition to map_db, list_db is available to  display  the
     database size, etc, and set of offsets calculated by map_db.

OPTIONS
     -n   Read file as DNA database.

BUGS
AUTHOR
     Bill Pearson
     wrp@virginia.EDU



























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