Migrating Databases with AWS Database Migration Service

 Amazon Web Service Database Migration Service (AWS DMS) is a cloud-based platform that assures easy and quick migration of databases to the Amazon Web Services. It may be migration from on-premises servers to the cloud or from one cloud provider to another.

A very critical aspect of AWS DMS is that the source database remains functional during migration without the need for downtime. This is very convenient for large enterprises as it might be inconvenient to shut down their systems for any length of time.

Further, with AWS DMS, databases can be moved from common and open-source ones. Data can also be replicated continually with high availability. Several databases can be consolidated into one petabyte-sized one with AWS DMS by streaming data to Amazon Redshift or Amazon S3. All these aspects make data migration with AWS a very attractive option. 



There are two methods of database migration with AWS DMS. 

One is Homogeneous database migration which is done when the engines, the data types, the data codes, and the schema structures of the source and target databases are similar. Migration here is a quick one-step process and is initiated with a click of a button as soon as the link between the source and the target is established.  

The next is Heterogeneous database migration when the engines, the data types, the data codes, and the schema structures of the source and target databases are different. Hence, before migration, the AWS Schema Conversion Tool is used to convert the data code and the schema structure of the source database to match that of the target database. This procedure is auto done by AWS DMS.

All these make database migration with AWS DMS a breeze.

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