text: exports.up = function(knex) {
    return knex.schema.alterTable("users_tis", function(table) {
      table.string("nom");
      table.string("prenom");
    });
  };
  
  exports.down = function(knex) {
    return knex.schema.alterTable("users_tis", function(table) {
      table.dropColumn("nom");
      table.dropColumn("prenom");
    });
  };
  