3. HTTP/REST + JSON = Database interaction for the web

8. The post-ORM realm

10. Evolutionary Schema: Persevere

11. JSON Schema based evolutionary schema Start without a schema Add constraints as application evolves

12. JSON Schema schema: {"description":"A person", "type":"object", "properties": {"name": {"type":"string"}, "age" : {"type":"integer", "maximum":125}} } instance: {“name”:”Kris”, “ age”:30}

13. JSON Schema driven UI Start with schema and simple form

15. JSONPath http://goessner.net/articles/JsonPath/ XPath like query language for JSON Filters - [?expr] Properties/paths (like JS) - .prop Recursive descent - ..prop Slice operator – [3:10:2] Union operator - [3,4,5]

16. JSONPath querying in requests REST URLs + JSONPath = Web querying /Table/ - All the objects in a table /Table/[?@.price < 10] – all items with a price under $10 /Table/..name – A list of the name property values /Table/.length – A count of the items in the table

17. JSONQuery http://www.sitepen.com/blog/2008/07/16/jsonquery-data-querying-beyond-jsonpath/ Lenient Syntax - ?price<10 Sorting - [/price, ating] Mapping - [=firstName+' '+lastName] Wildcarding [?description='*fun*'] Recursive object filter - ..[?name='Bar'] Example URL: /Table/[?price<10] [={name:name, rating: rating}] [ating]

25. Transactions

26. Live Data Notifications with REST Channels http://cometdaily.com/2008/05/13/http-channels-2/

29. REST/ Ajax databases Develop for the future