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Why is O<strong>Data</strong> Needed?
Today, the tools for capturing databoth at the mega-scale and at themilli-scale are just dreadful. After youhave captured the data, you need tocurate it before you can start doingany kind of data analysis, and we lackgood tools for both data curation anddata analysis.Quote – Jim Gray
What is O<strong>Data</strong>?
Web Friendly, just plain HTTP Uniform Patterns Focus on <strong>Data</strong>, not on Formats Stay High-Level, Abstract the StoreRequirements
“Self-service business intelligence”Let people find and use their own data…but where’s the data? Broad direct database access is impracticalO<strong>Data</strong> feeds expose data over application logic Reports often represent the best data sourcesAll reports in Reporting Services are now O<strong>Data</strong> feedsInsight from data
Government data, e.g. OGDIScientific data, e.g. OSDISocial dataCommercial public data, e.g. NetflixPremium data, <strong>Data</strong>Markets<strong>Data</strong> Sharing at Large
Consistent, Up to Date
Scale to Large <strong>Data</strong>sets
Create Web API to be Consumedwith Ease
maximize reach, focus investmentsshare libraries, browsers, applications
Monetize <strong>Data</strong>
data in modern webapplications
Where did O<strong>Data</strong> come from?
Is O<strong>Data</strong> RESTful?
Uniform way of representing structureddataAtom, JSON formats Uniform URL conventionsNavigation, filtering, sorting, paging, etc. Uniform operationsAddressabilityGET, POST, PUT, DELETE always mean the sameO<strong>Data</strong>
AtomPubThe name Atom applies to a pair ofrelated standards. The AtomSyndication Format is an XMLlanguage used for web feeds, whilethe Atom Publishing Protocol(AtomPub) is a simple HTTP-basedprotocol for creating and updatingweb resources.
JSON
The Metaof O<strong>Data</strong>
Lets dig into O<strong>Data</strong> Protocol
Feeds, which are Collections of typedEntries O<strong>Data</strong> services can expose ServiceOperations O<strong>Data</strong> services expose all these constructs viaURIs O<strong>Data</strong> service may also expose a ServiceMetadata Document O<strong>Data</strong> has the ability for validation andserver side securityThe Basics
Binary BooleanByteDateTimeDateTimeOffsetTimeDecimal DoubleSingleGuidInt16Int32Int64String<strong>Data</strong>types
HTTP VerbGETPUTPOSTDELETESQL CommandSELECTUPDATEINSERTDELETEMERGEFull SQL like Query “Language”
Query Navigation
http://services.odata.org/O<strong>Data</strong>.svc/GetProductsByRating?rating=5Identifies the "GetProductsByRating" Service Operation and specifiesa value of 5 for the "rating" input parameter.Service Operations (Example)
Where is O<strong>Data</strong> Used?
Who is using O<strong>Data</strong>?
Where can you consume it?
O<strong>Data</strong>.orgO<strong>Data</strong>Primer.comWrap Up
The FourthParadigm:<strong>Data</strong>-IntensiveScientificDiscovery
http://deepfriedbytes.com
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