text: DROP TABLE IF EXISTS `feature_defs_cnvr`;
  CREATE TABLE `feature_defs_cnvr` (
    `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
    `gene_name` tinytext,
    `num_search_hits` int(11),
    `value_field` tinytext,
    `internal_feature_id` tinytext,
    PRIMARY KEY (`id`)
  ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
  
  DROP TABLE IF EXISTS `feature_defs_gexp`;
  CREATE TABLE `feature_defs_gexp` (
    `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
    `gene_name` varchar(255),
    `center` varchar(255),
    `platform` varchar(255),
    `value_label` varchar(255),
    `internal_feature_id` varchar(255),
    PRIMARY KEY (`id`)
  ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
  
  DROP TABLE IF EXISTS `feature_defs_gnab`;
  CREATE TABLE `feature_defs_gnab` (
    `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
    `gene_name` tinytext,
    `num_search_hits` int(11),
    `value_field` tinytext,
    `internal_feature_id` tinytext,
    PRIMARY KEY (`id`)
  ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
  
  DROP TABLE IF EXISTS `feature_defs_meth`;
  CREATE TABLE `feature_defs_meth` (
    `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
    `gene_name` tinytext,
    `probe_name` tinytext,
    `platform` tinytext,
    `relation_to_gene` tinytext,
    `relation_to_island` tinytext,
    `num_search_hits` int(11),
    `value_field` tinytext,
    `internal_feature_id` tinytext,
    PRIMARY KEY (`id`)
  ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
  
  DROP TABLE IF EXISTS `feature_defs_mirn`;
  CREATE TABLE `feature_defs_mirn` (
    `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
    `mirna_name` tinytext,
    `platform` tinytext,
    `num_search_hits` int(11),
    `value_field` tinytext,
    `internal_feature_id` tinytext,
    PRIMARY KEY (`id`)
  ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
  
  DROP TABLE IF EXISTS `feature_defs_rppa`;
  CREATE TABLE `feature_defs_rppa` (
    `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
    `gene_name` tinytext,
    `protein_name` tinytext,
    `num_search_hits` int(11),
    `value_field` tinytext,
    `internal_feature_id` tinytext,
    PRIMARY KEY (`id`)
  ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;