• コマンドラインから実行することを想定しています。
• ユーザ名、パスワード、DB接続情報などは環境に合わせて変更してくださいね。
• サンプルではMySQLを使用していますが、他のRDBMSにも使えると思います。

 #!/usr/bin/perl
 
 use strict;
 use warnings;
 use DBI;
 
 my $user = 'username';
 my $passwd = 'pass';
 my $host = 'localhost';
 my $dbname = 'mysample';
 my $dbh = DBI->connect("DBI:mysql:$dbname:".$host, $user, $passwd);
 
 my $sql;
 my $sth;
 
 # CREATE TABLE
 $sql = "CREATE TABLE prefmaster ( id INT , name VARCHAR(255) ) ";
 $dbh->do($sql);
 
 # INSERT
 $sql = " INSERT INTO prefmaster (id,name) values (1, 'hokkaido') ";
 $dbh->do($sql);
 $sql = " INSERT INTO prefmaster (id,name) values (2, 'akita') ";
 $dbh->do($sql);
 
 # SELECT
 $sql = "SELECT * FROM prefmaster";
 
 $sth = $dbh->prepare($sql);
 $sth->execute;
 
 print "SELECT\n";
 while(my @a = $sth->fetchrow_array){
     print "@a\n";
 }
 print "\n";
 
 # UPDATE
 $sql = " UPDATE prefmaster SET name = 'iwate' WHERE id = 2 ";
 $dbh->do($sql);
 
 # DELETE
 $sql = " DELETE FROM prefmaster WHERE id = 1 ";
 $dbh->do($sql);
 
 # SELECT AGAIN
 $sql = "SELECT * FROM prefmaster";
 
 $sth = $dbh->prepare($sql);
 $sth->execute;
 
 print "SELECT\n";
 while(my @a = $sth->fetchrow_array){
     print "@a\n";
 }
 print "\n";
 
 
 # DROP TABLE
 $sql = " DROP TABLE prefmaster ";
 $dbh->do($sql);
 
 
 $sth->finish;
 $dbh->disconnect;