PostgreSQL and MySQL are both widely used open-source relational database management systems (RDBMS) that offer unique features and strengths. However, PostgreSQL has several distinct advantages over MySQL for corporate scale data warehouses, including better performance in large databases, faster query execution, and better scalability, fault tolerance, and high availability in distributed environments.
But migrating from MySQL to PostgreSQL can be challenging, and it’s crucial to use specialized automation tools to minimize the risk of data loss or corruption due to human error. Although free tools are available for MySQL to Postgres database migration, they often require a lot of preparation and prerequisite steps, like installing and compiling from sources, creating target databases and roles, and managing certificates.
For users who aren’t comfortable with the command line or lack expertise in system administration tasks, commercial tools like MySQL to PostgreSQL converter by Intelligent Converters can be a better option. This product implements direct reading and writing of data without using middleware libraries or components, making it a popular choice for migrating data from MySQL to PostgreSQL. It’s compatible with all versions of MySQL and PostgreSQL, including forks like MariaDB and Percona and works with popular PaaS variations of DBMS such as Azure for MySQL, Amazon RDS, Google cloud, and Heroku.
MySQL to PostgreSQL converter offers a user-friendly graphical interface, command-line support for scripting and scheduling, and several useful options for migrating data, such as filtering specific records using ‘Select’ queries, renaming, changing the type and attributes, or excluding columns from migration. Users can also merge or sync existing PostgreSQL databases with MySQL data. If the PostgreSQL server doesn’t allow remote connections, theconverter provides an option to export the MySQL database into an SQL script, which can be imported to PostgreSQL using standard tools like pgAdmin or psql
Wizard-styleinterfaceof MySQL to PostgreSQL converter will navigate through the entire database migration via easy to understand steps as follows.
- Select Migration Scenario.Choose either to migrate into PostgreSQL database directly or to export into SQL script file with statements to. The second option may be suitable for those cases where the target PostgreSQL server does not allow remote connections.
- Connect to MySQL Server. Provide all necessary details (network name or IP address of the host, username and password)to establish connection to MySQL server.
- Connect to PostgreSQL Server. If ‘Migrate to PostgreSQL server directly’ has been selected, you need to provide the settings (IP address or network name of the host, username and password) to establish connection with PostgreSQL server.
- Select the Databases. Enter source MySQL and PostgreSQL database names. Specify a log file to enable the tool writing execution traces. Finally, select the proper PostgreSQL encoding to storetext data correctly.
- Specify Conversion Settings. Configure the database migration using the following settings:
- Convert table definitions only
- Create tablesLOGGED or UNLOGGED
- Insert data using INSERT or COPY statements
- Make names case sensitive
After selecting MySQL tables and views to migrate, you will see the progress indication screen and the database migration will be launched.
There are some essential steps of the database migrationthat a specialist should always remember, regardless of the chosen approach. Firstly, it is crucial to back up the databases before starting the migration process to ensure data integrity. Secondly, organizations must perform performance and functional tests to validate the migration results before releasing them in production. Lastly, it is advisable to conduct recurring backup procedures even after the migration process is completed, to prepare for potential data loss disasters.
In conclusion, PostgreSQL offers several significant benefits for corporate scale data warehouses over MySQL. However, organizations should plan and execute the migration process carefully using specialized tools such as MySQL-to-PostgreSQL to ensure safe and accurate data migration. By doing so, they can take advantage of PostgreSQL’s benefits, including high availability, fault tolerance, faster query execution, and better scalability.