how do i save large amount of data into DB using DataMapper

Question

Im trying to insert into the database but sinatra throws this error

DataObjects::ConnectionError at / database is locked

at line Name.create(babyname: name ,year1900: results[0] ,year1910: results[1] ,year1920: results[2] ,year1930: results[3],year1940: results[4],year1950: results[5] ,year1960: results[6],year1970: results[7] ,year1980: results[8] ,year1990: results[9] ,year2000: results[10])

This is how im reading the text file and creating the name

File.open("names-data.txt", "r") do |f|
f.each_line do |line|
  item = line.split(/\n/)
  array = item[0].split(/\s+/)
  name = array[0]
  array.shift
  pop = array
  results = pop.map { |number| if number =~ /0/ then 1001 else number.to_i end }
 Name.create(babyname: name ,year1900: results[0] ,year1910: results[1] ,year1920: results[2] ,year1930: results[3],year1940: results[4],year1950: results[5] ,year1960: results[6],year1970: results[7] ,year1980: results[8] ,year1990: results[9] ,year2000: results[10])
end

end

Here are a few lines in the text file that i am reading

Abbigail 0 0 0 0 0 0 0 0 0 953 562

Abby 0 0 0 0 0 906 782 548 233 211 209

Abdiel 0 0 0 0 0 0 0 0 0 925 721

There are over 4000 lines