lib/store.js
function getDatabase(index, opts) {
  var db;
  if(!this._databases[index]) {
    db = new Database(this, opts);
    this._databases[index] = db;
  }
  return this._databases[index];
}
function getDatabase(index, opts) {
  var db;
  if(!this._databases[index]) {
    db = new Database(this, opts);
    this._databases[index] = db;
  }
  return this._databases[index];
}
function getDatabase ( index , opts ) { var db ; if ( ! this . _databases [ index ] ) { db = new Database ( this , opts ) ; this . _databases [ index ] = db ; } return this . _databases [ index ] ; }
Get a database and inject it into the list at the
specified index if no db exists at that index.

@param index The database index.
@param opts Database options.
Get a database and inject it into the list at the specified index if no db exists at that index .