Breaking down data silos with OData
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{ Breaking down Data Silos The Open Data Protocol AKA OData Chris Woodruff Semantic Technology Conference San Francisco, CA June 8, 2011
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The Open Data Protocol (OData) is an open protocol for sharing data. It provides a way to break down data silos and increase the shared value of data by creating an ecosystem in which data consumers can interoperate with data producers in a way that is far more powerful than currently possible, enabling more applications to make sense of a broader set of data. Every producer and consumer of data that participates in this ecosystem increases its overall value. OData is consistent with the way the Web works – it makes a deep commitment to URIs for resource identification and commits to an HTTP-based, uniform interface for interacting with those resources (just like the Web). This commitment to core Web principles allows OData to enable a new level of data integration and interoperability across a broad range of clients, servers, services, and tools.
Transcript of Breaking down data silos with OData
{
Breaking down Data Silos
The Open Data Protocol AKA OData
Chris WoodruffSemantic Technology ConferenceSan Francisco, CAJune 8, 2011
Goals
What is it?Why do we care?How do we use it?
Why is OData Needed?
Quote – Jim Gray
Today, the tools for capturing data both at the mega-scale and at the milli-scale are just dreadful. After you have captured the data, you need to curate it before you can start doing any kind of data analysis, and we lack good tools for both data curation and data analysis.
What is OData?
Web Friendly, just plain HTTPUniform PatternsFocus on Data, not on Formats
Stay High-Level, Abstract the Store
Requirements
“Self-service business intelligence” Let people find and use their own data …but where’s the data?
Broad direct database access is impractical OData feeds expose data over application logic
Reports often represent the best data sources All reports in Reporting Services are now OData
feeds
Insight from data
Government data, e.g. OGDIScientific data, e.g. OSDISocial dataCommercial public data, e.g. Netflix
Premium data, DataMarkets
Data Sharing at Large
Consistent, Up to Date
Scale to Large Datasets
Create Web API to be Consumed with Ease
maximize reach, focus investmentsshare libraries, browsers, applications
Monetize Data
data in modern web applications
Is OData RESTful?
OData
Uniform way of representing structured data Atom, JSON formats
Uniform URL conventions Navigation, filtering, sorting, paging, etc.
Uniform operations Addressability GET, POST, PUT, DELETE always mean the
same
The name Atom applies to a pair of related standards. The Atom Syndication Format is an XML language used for web feeds, while the Atom Publishing Protocol (AtomPub) is a simple HTTP-based protocol for creating and updating web resources.
AtomPub
JSON
The Meta of OData
Lets dig into OData Protocol
Feeds, which are Collections of typed Entries
OData services can expose Service Operations
OData services expose all these constructs via URIs
OData service may also expose a Service Metadata Document
OData has the ability for validation and server side security
The Basics
BinaryBooleanByteDateTimeDateTimeOffset
TimeDecimal
Datatypes
DoubleSingleGuidInt16Int32Int64String
HTTP Verb SQL Command
GET SELECT
PUT UPDATE
POST INSERT
DELETE DELETE
MERGE
Full SQL like Query “Language”
Query Navigation
http://services.odata.org/OData.svc/GetProductsByRating?rating=5
Identifies the "GetProductsByRating" Service Operation and specifies a value of 5 for the "rating" input parameter.
Service Operations (Example)
Where is OData Used?
Who is using OData?
Where can you consume it?
LINQ
OData.orgODataPrimer.com
Wrap Up
The Fourth Paradigm: Data-Intensive Scientific Discovery
http://deepfriedbytes.com
