SQL Server is an enterprise-class relational database management system that is used widely in corporate IT environments and has come to incorporate various data management, data analytics, and business intelligence capabilities. With the introduction of SQL Server 2016—supporting faster transaction and query processing, advanced data analytics, and new hybrid cloud scenarios—we're seeing renewed interest in SQL Server technologies and SQL Server database replication.
SQL Server database replication allows SQL Server users to create and maintain multiple copies of their databases for operational reporting, solutions testing, load balancing, disaster recovery, data consolidation, and distributed data processing purposes. SQL Server data replication tools equipped with SQL change data capturecapabilities enable users to carry out large-scale database migrations with minimal downtime and achieve real-time data integration across the organization.
Through embedded SQL database replication technology, SQL Server supports three types of replication: snapshot, transactional, and merge replication. Snapshot replication is a single unidirectional push of all data and database objects from the source database, referred to as the publisher, to the target database, or subscriber. Transactional replication, which is the most common SQL Server database replication type, delivers a near real-time copy of individual database transactions from the publisher to the subscriber(s) when changes to the publisher are detected by a replication agent.
A type of bidirectional SQL Server replication, merge replication is typically used in server-to-client environments to synchronize data across systems which cannot be continuously connected. When publisher and subscriber are connected, a merge replication agent detects changes on both systems and modifies each system accordingly.
If you're looking for a SQL Server database replication tool that offers flexibility and ease of use, we encourage you to consider Qlik Replicate (formerly Attunity Replicate) in your database replication tool comparison. Replicate is a high-performance, low-impact data replication solution that helps you ingest, replicate, distribute, and consolidate data efficiently across all major databases, data warehouses, Hadoop, and the cloud.
Replicate accelerates zero-downtime database migrations and leverages a unique change data capture technology to enable real-time data integration without significantly impacting IT operations. With Replicate, there's no need to install intrusive agents on either source or target systems, and you can define, configure, and manage replication processes from our intuitive, web-based Click-2-Replicate designer. Replicate automates the replication of database schemas, full tables, and incremental changes while supporting user-defined filtering and table or column changes.