db={category:[{id:1,name:"cat 1"},{id:2,name:"cat 2"}],items:[{id:1,name:"item 1"},{id:2,name:"item 2"},{id:3,name:"item 3"},{id:4,name:"item 4"}],package:[{id:1,name:"package 1",brandId:1,items:[{_id:1,itemId:1},{_id:2,itemId:2}]},{id:2,name:"package 2",brandId:2,items:[{_id:1,itemId:3},{_id:2,itemId:4}]}]}