What Is Microsoft Marketplace What Is Microsoft Marketplace DataMarketDataMarket?

Michael StiefelMichael Stiefelwww.reliablesoftware.com

development@reliablesoftware.comwww.reliablesoftware.com/dasblog/

default.aspxLevel: Intermediate

A marketplace of data sets with a A marketplace of data sets with a standard API.standard API.

DataMarket is about the possibilities…DataMarket is about the possibilities…

Application: Should I Move There?Application: Should I Move There?Is it safe?

Crime Data from the U. S. Government

What are my neighbors like?Consumer Expenditure DataKey US Demographics by Zip Code, Place and County

What is the weather like?Weather Data

Can I buy a house there?Home Valuation Mortgage Information

Trusted Data ProvidersTrusted Data Providers

AuthoritativeCommercialGovernment

Structured and Unstructured Data

Uses OData ProtocolUses OData Protocol

REST based OData feed use HTTP/HTTPS URIs.Open Data Protocol

Astoria / ADO.NET Data Services / WCF Data Services

Builds on ATOM, JSON, XMLClients can be Java, .NET, PHP, Silverlight, iPhone, Windows Phone 7, etc.

OData Data ModelOData Data ModelOData Feed is a collection of typed Entries

http://services.odata.org/OData/OData.svc/Products

Entry has simple or complex propertiesService Operations can be exposed

http://services.odata.org/OData/OData.svc/

Metadata availablehttp://services.odata.org/OData/OData.svc/$metadataAllows for automated discovery of different feeds

Types of QueriesTypes of QueriesFlexible Query

Dynamically Build QueriesUse Visual Studio Add Service Reference

Fixed QueryPredetermined provider queryMay or may not have optional parametersUse provider created proxy class

Making a QueryMaking a QueryFormulate Query StringAdd parameters for filters, pagination

Server based filtering

Get back XML payloadAuthenticate with Account Key

DataMarket Portal…..DataMarket Portal…..

DemosDemos

Business ModelBusiness ModelSome Free Data Sets for DevelopersTransaction (query) or Subscription PricingBroad Spectrum of data"Easy to understand licensing“Microsoft takes a brokerage commission

Content Developer Opportunities Content Developer Opportunities One place to look for dataOne format for getting dataUnderstand data set through ExplorerClear licensingClear Subscription Model

Subscription ModelsSubscription ModelsOptions

UnlimitedLimited to a fixed number of transactions

Billed monthlyOptional throttling by content providerAuto renewFree public data sets available

Content Provider OpportunityContent Provider OpportunityMarketplace

Control data, terms, price

Single point of billingPeriodically receive payments and reports

Data transformation to common formatsLong Tail for Data providersBuilt on Windows Azure

AdvantagesAdvantages

Developer has one billing relationship through the marketplaceAccess data sets that were previously difficult to obtainStandard API allows DataMarket to be used from Java, PHP, or on an IPhone.

DataMarket Front End ArchitectureDataMarket Front End Architecture

Azure Web role for portal and requestsFrequent requests cached

In memory cache for VMAzure tables for distributed cacheData sources help define cache lifetimes

DataMarket Bank End ArchitectureDataMarket Bank End ArchitectureQueues and Worker roles for returning dataSQL Azure for account informationData sets with CSDL mapping

SQL AzureProvider Web services

Health Monitoring with sample queriesTransferred to Azure tables with reportingAlerts based on results

Certificates for 3rd party connection info

SummarySummary

Dallas is an application built on AzureUses OData API for simplicityCan integrate with Access Control ServiceBusiness Model drives "sense" of the application