Database Migration – What is it?

Applications using a database would require updates over time to support new features or fix the scaling problem with the queries. Generally, most companies face this situation as their users grow. As a result, developers have to make the required changes and updates during software development.

You must be wondering why there is a need for database migration while evolving using new and emerging technologies. Let me just brief you about some of the reasons why firms need to migrate databases from one platform to another.

What is database migration?

Database migration, in simple words, means moving data from one platform to another. Otherwise, it is a complex, multiphase process, which usually includes assessment, database schema conversion (if you are changing engines), script conversion, data migration, functional testing, performance tuning, and many other steps.

With the rise in popularity of Git, the trend of writing web-based applications using object-relational mapping (ORM) libraries also became well-known. The main objective was: if developers can make changes in code that are easy to roll back using Git, they could also be able to do the same things when it comes to schema changes.

Well, any new feature involves code and schema changes. Therefore, many popular frameworks added ORM and database migration (also known as schema migration or dB migration) as part of their offerings.

But, database migration is a concept that is not restricted to popular web frameworks. In order to ease the process of database migration, there are many standalone libraries available.

Let me tell you database migration involves a lot of effort. Performing database migration might seem to be a challenging task for many. And, it is indeed!

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