1. Data Models for Web Applications
Garret Swart (and Nikunj Mehta)
Oracle Corporation

2. The Changing Web Application Architecture
HTML Pages
Disk Pages
Mid
Tier
RDBMS
Storage
Tuples
HTTP
SQL
SCSI
Render
Security Application Logic Visualization
Query Execution DML Transactions

3. The Changing Web Application Architecture
HTML Pages $
Disk Pages
Mid
Tier
RDBMS
Storage
Tuples
HTTP
SQL
SCSI
Objects Feeds
Render Application Logic Visualization
Validation Query Mapping
Security? Query Execution DML Transactions

4. HTTP Data Models ReST + HTTP Atom AtomPub
Each object has a distinguished URL
Verbs: GET, PUT (replace), DELETE, POST (arbitrary modify)
etag for compare and swap
Atom
A URL can represent a query (with query parameters): Returns a set of objects w/ URLs
AtomPub
URL can represent a mutable container.
POST adds an object to container

5. AtomPub Proxy in the Client
Reduced communication
Disconnected operation
Background synchronization
Single Application data model
App
Atom Proxy
Proxy
Cache
HTTP Engine
AtomPub Server