This presentation provides an overview of SQL Azure (DevDays 2010)

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Lap around SQL Azure
Anko Duizer

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Introduction
• Anko Duizer
– Chief Software Architect
– Blog: http://www.ankoduizer.nl
– Twitter: ankoduizer
• TellUs
– Lead generation
– > 5000 sites
– World wide
– Microsoft platform

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INTRODUCTION

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Data platform: device to cloud
RDBMS
Caching Protection Load Mining Sync Reporting
Service Analysis Query Integration Search
Backup
Type In Multi Relational XML File
Memory Dim BLOB
Place
Mobile/Desktop Desktop Server Mega-server Data Services

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Reporting Business Analytics Data sync
• The power of the SQL Data Platform in the cloud
• Leverages existing skills and rich tooling ecosystem
• Enables database applications with new, “cloud” capabilities

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Cloud Data in the
application
cloud
On-premises
application

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Value Props:
Dedicated Value Props:
On-premise
Resources
Hosted
Value Props:
SQL Azure Roll-your-own HA/scale
Shared
Low Control High

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SQL AZURE

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SQL Azure
• Mangebility
• Scalability
• Developer empowerment

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Application Browser Application
application ODBC, OLEDB,
REST Client SQL Client*
ADO.Net PHP,
Ruby, …
Cloud
HTTP+REST
HTTP
TDS
Windows Azure
REST (Astoria) Web App
ADO.Net + EF SQL Client*
Cloud
TDS + TSQL Model
SQL Azure

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Account
Server=server1.data.database.windows.net
Database=testDB
Login=nigele[@server1] (maps to testuser)
Server
Database

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Logical vs. Physical administration
• SQL Azure focus on logical administration
– Schema creation and management
– Query optimization
– Security management (Logins, Users, Roles)
• Service handles physical management
– Automatically replicated with HA “out of box”
– Transparent failover in case of failure

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Architecture
Provisioning (databases, accounts, roles, …, metering, and billing
Machine 4 Machine 5 Machine 6
SQL Instance SQL Instance SQL Instance
SQL DB SQL DB SQL DB
User User User User User User User User User User User User
DB1 DB2 DB3 DB4 DB1 DB2 DB3 DB4 DB1 DB2 DB3 DB4
scalability and availability: fabric, failover, replication, and load balancing Load balancing
Scalability and Availability: Fabric, Failover, Replication, and

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Deployment
• Support for basic deployment options
– SQL scripts work (but not attach database)
• Geo-location of Windows Azure compute
and SQL Azure databases
• Cloud or on-premise is a deployment time
choice

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SQL Azure deployment
Web Portal
(API)
DB SQL Azure
Script
TDS

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SQL Azure - Accessing databases
Web Portal
(API)
Your SQL Azure
App TDS
Change connection string

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Database replicas
Replica 1
Replica 2
DB
Replica 3

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Database monitoring & recovery
Web Portal
(API)
Your
App !
SQL Azure
TDS

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Failure Scenario
Database Backups
Solution When Responsible Party
X
HW and Media Multiple replicas of all databases with automatic Today SQL Azure - Built-in to
failures failover. System backups for additional protection the base service
Use BCP, SSIS or other custom tools to backup data Today Customer
Customer application or
administrator errors leading to data Database clone to create on-demand, backups of
loss databases in the local or remote SQL Azure region
• Cloning is done with transactional consistency 1H 2010 Customer
• When clone operation is complete the replica is
accessible as a normal database
Continuous backup option with point-in-time restore
capabilities 1. Customer enables
and configures it.
• Configurable retention and lag period 2H 2010
2. Service will
• Backups available for read operations
maintain it
• Local or remote region

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Database clone
xyz.database.windows.net efg.database.windows.net
Master prod1 Prod2 prod2
DR1 Master
clone
prod2
clone
abc.database.windows.net
prod2
Master Dev1
clone
South central US North central US
CREATE DATABASE efg.prod2clone
abc.prod2clone
xyz.prod2clone AS CLONE OF xyz.prod2

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PROGRAMMING SQL AZURE

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Programming model
• Small data sets
– Use a single database
– Same model as on premise SQL Server
• Large data sets and/or massive throughput
– Partition data across many databases
– Use parallel fan-out queries to fetch the data
– Application code must be partition aware in v1

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Connection model
• Use existing client libraries
– ADO.NET, ODBC, PHP
• Client libraries pre-installed in Azure roles
• Support for ASP.NET controls
• Clients connect directly to a database

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Compatibility goals
• Support common application patterns
• Logical/policy based administration
• Patterns work from SQL Server to SQL Azure
• Multi-tenancy considerations
– Throttling
– Limits on DB size, transaction duration, …

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Sample of SQL compatibility
v1 vNext
• Tables, indexes and • Distributed transactions
views • Distributed query
• Stored procedures • CLR
• Triggers • Service broker
• Constraints • Spatial
• Table variables, • Physical server or
session temp tables (#t) catalog DDL and views

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Security model
• Uses regular SQL security model
– Authenticate logins, map to users and roles
– Authorize users and roles to SQL objects
• Limited to standard SQL Auth logins
– Username + password
• Future AD Federation, WLID, etc as alternate
authentication protocols

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FUTURE

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Planned
• Partitioned databases
• Spatial data
• Security AD, WLID, etc
• Increased database size

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Requests…
• Add support for profiler, DMVs …
• Full-text search support
• Change tracking support
• Support for CLR
• Cloud based Business Intelligence (BI)
solutions

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USEFUL?

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Scenarios for V1
• Departmental applications
– Simple application built by individual or department
– Need simple deployment, self-management, IT: “Empowerment and governance”
• Web Applications
– Small business or startup that uses the cloud as their IT
– Simple deployment, self-management, scale on demand
• ISV
– ISV hosting software on behalf of customer
– Multi-tenant support for billing and isolation
• Data hub
– Sharing and aggregating of data across tiers and across enterprises
– Centralized place for data, high scale, sync with existing data sources

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Application/
Browser
App Code
Azure

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Application/
Browser
How much App Code
data is
transfered? On premise
Azure

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Source
SSIS
On premise
backup
Azure

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Application/
Browser
App Code
Z
X Y
Azure

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Azure
Sync framework
Data
Source hub
Sync framework
On-premise/ department
Source
Laptop

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NOT USEFUL!

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Application/
Browser
Too much App Code
data
transferred On premise
Azure

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SSIS
On
premise
Source destination
Azure Azure

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Is it cheaper?

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• 1GB Database • 10GB Database
• $9.99 / month • $99.99 / month
• Bandwidth • Bandwidth
– $0.10 /GB inbound – $0.10 /GB inbound
– $0.15 /GB outbound – $0.15 /GB outbound

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Question?