Intro to SQL Azure

NameTitleMicrosoft Corporation

Session Objectives and Takeaways

Session Objective(s):Get up to speed on SQL AzureLearn about the architecture and cloud specific features of SQL AzureDemonstration of some core features in action

TakeawaySQL Azure is uniquely positioned as an ideal data platform for Windows Azure applications

SQL Azure DatabaseThe first and only true relational database as a service

Elastic Scale Developer Agility

Self-managed

o Database utility; pay as you grow

o Business-ready SLAs

o Enable multi-tenant solutions

o World-wide presence

o Easy provisioning and deployment

o Auto high-availability and fault tolerance

o No need for server or VM administration

o Build cloud-based database solutions on consistent relational model

o Leverage existing skills through existing ecosystem of developer and management tools

Application TopologiesFrom

Windows AzureFrom Outside

Microsoft Datacenter From Outside

Microsoft Datacenter & Windows Azure

Application / Browser

Windows Azure

SQL Azure

Code Near

App Code / Tools

SQL Azure

MicrosoftDatacenter

Code Far Hybrid

Microsoft Datacente

r

SQL Azure

SQL Server

Microsoft Datacenter Windows

Azure

SQL Azure Data Sync

App Code / Tools

Architecture

Shared infrastructure at SQL database and below

Request routing, security and isolation

Scalable HA technology provides the glueAutomatic replication and failover

Provisioning, metering and billing infrastructure

Database Replicas

Replica 1

Replica 2

Replica 3

DB

Single Database Multiple Replicas

Single Primary

Replica 4

!

Behind the Scenes of SQL Azure Applicatio

n

Internet

LB

TDS (tcp)

TDS (tcp)

TDS (tcp)

Apps use standard SQL client libraries: ODBC, ADO.Net, PHP, …

Load balancer forwards ‘sticky’ sessions to TDS protocol tier

Security Boundary

Gateway

Gateway

Gateway

Gateway

Gateway

Gateway

Scalability and Availability: Fabric, Failover, Replication, and Load balancing

SQL SQL SQL SQL SQLSQL

Gateway: TDS protocol gateway, enforces AUTHN/AUTHZ policy; proxy to backend SQL

Service Provisioning Model

Each account has zero or more logical servers

Provisioned via a common portalEstablishes a billing instrument

Each logical server has one or more databases

Contains metadata about database & usageUnit of authentication, geo-location, billing, reportingGenerated DNS-based name

Each database has standard SQL objects

Users, Tables, Views, Indices, etcUnit of consistency

Account

Server

Database

Working With SQL Azure

Connection Model

SQL Azure exposes native SQL Server TDS protocolUse existing client libraries

ADO.NET, ODBC, PHPClient libraries pre-installed in Windows Azure rolesSupport for ASP.NET controlsClients connect directly to a database

Cannot hop across DBs (no USE)

Connecting to SQL Azure

SQL Azure connection strings follow normal SQL syntaxApplications connect directly to a database

“Initial Catalog = <db>” in connection stringNo support for context switching (no USE <db>)

Encryption securitySet Encrypt = True, only SSL connections are supportedTrustServerCertificate = False, avoid Man-In-The-Middle-Attack!

Format of username for authentication:ADO.Net:Data Source=server.database.windows.net;User ID=user@server;Password=password;...

Setup your firewall rules first!

Logical vs. Physical Administration

SQL Azure focus on logical administrationSchema creation and managementQuery optimizationSecurity management (Logins, Users, Roles)

Service handles physical managementAutomatically provides HA “out of box”Transparent failover in case of failureLoad balancing of data to ensure SLA

DBA role places more focus on logical management

Deployment

Deploy via T-SQL scripts

Support for SQL Server Data-Tier Applications (DAC) feature

DACPAC is unit of deploymentCloud or on-premise is a deployment time choice

Create Logical Server in same region as Windows Azure Affinity Group for code-near architecture

Support existing and new forms of deployment

Security Model

Uses regular SQL security modelAuthenticate logins, map to users and rolesAuthorize users and roles to SQL objects

Support for standard SQL Auth loginsUsername + password

Security model is 100% compatible with on-premise SQL

Lap Around SQL Azure

demo

NameTitleCompany

Sample of SQL Compatibility

Currently SupportedTables, indexes and viewsStored ProceduresTriggersConstraintsTable variables, session temp tables (#t)Spatial

Not Currently Supported

Distributed TransactionsDistributed QueryCLRService BrokerPhysical server or catalog DDL and views

Spatial Support2D Vector Data:

Geography – Round-Earth dataGeometry – Flat-Earth data

Support for Point, Line, Area (Polygon) objectsOver 70 T-SQL spatial methodsHigh-performance spatial indicesSpatial industry standard supportSymmetry w/SQL Server 2008

Database Editions

Two SQL Azure Database SKUs: Web & BusinessWeb Edition: 1 GB @ $9.99/month | 5 GB @ $49.95/monthBusiness Edition: Up to 50 GB @ $99.99/10 GB/month10 GB @ $99.99 | 20 GB @ $199.98 | 30 GB @ $299.97 | 40 GB @ $399.96 | 50 GB @ $499.95

You specify Web or Business EditionWeb: EDITION = webBusiness: EDITION = business

You specify MAXSIZEWeb: MAXSIZE = 1GB | 5GBBusiness: MAXSIZE = 10GB | 20GB | 30GB | 40GB | 50GB

This is the maximum size we will not let you grow beyondYou will only be charged for the actual peak size in any one day rounded upFor example, a 3.4 GB Web Edition will be charged 5GB rate.

CREATE DATABASE foo1 (EDITION='business', MAXSIZE=50GB);CREATE DATABASE foo2 (EDITION='business', MAXSIZE=30GB);

ALTER DATABASE foo2 MODIFY (EDITION='web', MAXSIZE=5GB);

Up to 50 GB10 GB increments

Business Edition

1 GB or 5 GBWeb Edition

Scale Out with SQL Azure

Scale Out SQL Azure

Large Data Sets and/or Massive Throughput

Partition data across many databasesUse parallel fan-out queries to fetch the dataApplication code must be partition aware

Just-In-Time PartitioningPartition just for peak load periodsRun partitioned databases in cloud;consolidate into single database on-premise

Sharding Databases

1 x 20 GB database = 1 Machine

20 x 1 GB databases = 20 Machines

SQL Azure Advanced Features

OData Support

JSONATOM

PUBHTTP

Sign up and send us your feedback!

https://www.sqlazurelabs.co

m

Open Data Protocol

Project “Houston”

SQL Azure Data Sync Service

Benefits

• Scale-out read or read/write

• Geo replication of data

• Edge network data distribution

Sync Grou

p

SQL Azur

e

SQL Azur

e

SQL Azur

e

Summary

SQL Azure provides highly availableRDBMS in the cloud.

Broad SQL Server feature equivalencePartition for Size and LoadSpatial features