Windows Azure SQL Database Deep Dive Chris Auld CTO – Intergen AZR432

Nomenclature SQL Database = SQL Azure

On Prem Provisioning ModelCloud Provisioning Model

Single tenant per database Multiple-tenants per databaseMultiple databases per tenant

Federations in SQL Azure

SalesDB Orders_federation fed_name Federation Members just SQL Database instances Federation Root just a SQL Database instance Federations member: Range [1000, 2000) AU PK=5 AU PK=25 AU PK=35 AU PK=5 AU PK=25 AU PK=35 AU PK=1005 AU PK=1025 AU PK=1035 Atomic Units Smallest granule of federation key Range Partitioning

SalesDB Orders_federation Orders_Fed [5000, 10000) ALTER FEDERATION Orders_Fed SPLIT AT (tenant_id=7500) [5000, 7500) & [7500, 10000)

SalesDB Orders_federation Orders_Fed USE FEDERATION Orders_Fed(tenant_id=7500)

A Quick Lap of Federations

Scale Out with SQL Database Database Design

SalesDB CustomerFederationeration CustomerFederation Federated Tables and Reference Tables Central Tables

Table Groups Orders_federation fed_name

Federation Columns Orders_federation fed_name

Scale Out with SQL Database Application Programming

SalesDB CustomerFederationeration CustomerFederation Range Distribution [min,1000, 2000, 3000 … , 10000, Max] -- Connect to Root Database USE FEDERATION CustomerFederation(customer_id = 5075) …

Connecting to Federations Filtering Connections Microsoft Confidential SalesDB member: Range [100,200) orders (federated) CustomerFederation orderdetails (federated) Uszipcodes (referece) CustomerFederation Customer_id=55

Connecting to Federations Member Connections Microsoft Confidential SalesDB member: Range [100,200) orders (federated) CustomerFederation orderdetails (federated) Uszipcodes (referece) CustomerFederation Customer_id=55

//MEMBER QUERY //start from the first member – min value USE FED f(id=min) WHILE (nextvalue != NULL) //get results into dataset DataAdapter.Fill(ds); //get the value to navigate to the next member nextvalue = SELECT range_high FROM sys.federation_member_distributions //SUMMARY QUERY LINQ2DataSet(ds)

Fan-out Queries Submitting Fan-out Queries with Sample Fan-out Query Utility Demo

Scale Out with SQL Database Administration

Managing Members Managing members and schemas with fan out tool Demo

Recent Changes Available Today Changes Coming in the Next Quarter

Gateway Nodes DB Nodes App Server #Users

DR simplified with Federations

SalesDB Orders_federation Orders_Fed Unavailable Federation Members Federation Root Federations db1

SalesDB Orders_federation Orders_Fed Federations DBCopy now PITR 6/11/ :00:00

SalesDB Orders_federation Orders_Fed Federations Swap Out Drop Copy Data In

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