Book Image

Professional Azure SQL Database Administration - Second Edition

By : Ahmad Osama
Book Image

Professional Azure SQL Database Administration - Second Edition

By: Ahmad Osama

Overview of this book

Despite being the cloud version of SQL Server, Azure SQL Database differs in key ways when it comes to management, maintenance, and administration. This book shows you how to administer Azure SQL Database to fully benefit from its wide range of features and functionalities. Professional Azure SQL Database Administration begins by covering the architecture and explaining the difference between Azure SQL Database and the on-premise SQL Server to help you get comfortable with Azure SQL Database. You’ll perform common tasks such as migrating, backing up and restoring a SQL Server database to an Azure database. As you progress, you’ll understand how you can reduce costs, and manage and scale multiple SQL databases using elastic pools. You’ll also implement a disaster recovery solution using standard and active geo-replication. Whether it is learning different techniques to monitor and tune an Azure SQL Database or improving performance using in-memory technology, this book will enable you to make the most out of Azure SQL database features and functionality for data management solutions. By the end of this book, you’ll be well-versed with key aspects of an Azure SQL Database instance, such as migration, backup restorations, performance optimization, high availability, and disaster recovery.
Table of Contents (11 chapters)

Introduction

This lesson talks about the important database features available in an Azure SQL database. The lesson talks about SQL Data Sync, which is used to sync data between two or more Azure SQL databases or on-premises SQL servers, the SQL Graph capabilities and enhancements, and Machine Learning services available in an Azure SQL Database.

Azure SQL Data Sync

As the name suggests, Azure SQL Data Sync allows bi-directional data sync between one or more Azure SQL databases and on-premises databases. The Azure SQL Data Sync service is free; however, there are charges for data movement into and out of Azure SQL Database.

The following diagram shows how data is typically synced between an Azure SQL database and an on-premises database:

Figure 10.1: Syncing between an Azure SQL database and on-premises database

Azure SQL Data Sync consists of a sync group. A sync group has a hub database and one or more member databases. The data sync is always from hub to member, or from member...