MySQL to PostgreSQL: introduction to database migration

There is long-term trend in the modern database world: many companies shift to open-source database management systems to reduce total cost of ownership.The most popular open-source DBMS are MySQL and PostgreSQL. Both of them are enrichedby powerful features, wide collections of administration tools and programming frameworks.

MySQL and PostgreSQLare similar in many aspects, however there are few importantreasons to choose PostgreSQL instead ofMySQL: full support of ACID (Atomicity, Consistency, Isolation, Durability), compliance with the ANSI SQL standard, wide variety of indexing models, asynchronous commit, flexible full text search and many others.

Those benefits force some organizations that need the most powerful and reliable data warehouses migrate their databases from MySQL to PostgreSQL. In general, migration process is occurred according to extract-transfer-load approach including the following steps:

1. Extract MySQL table definitions, indexes and constraints in form of SQL CREATE-statements, convert them into PostgreSQL format and import to the target database
2. Export MySQL data into temporaryCSV files, transformed it to comply with PostgreSQLformat and importto the target tables
3. Extract MySQL views, triggers and stored procedures in form of SQL statements and the source code, transform all of them according to PostgreSQL format and load to the target database

This brief guide proves MySQL to PostgreSQLdatabase migrationis quite complicated and tedious taskdemanding a lot of efforts. Implementing the procedure manually implieshigh risk of losing data integrity or database logics due to human errors, especially for large databases. This is the reason why database migrationfrom MySQL to PostgreSQLmust be runvia special softwaresolutions.

There are many conversion tools provided by software companies.  It is necessary to know what are the primary requirements for such tools in order to make the proper choice. Here are the most important featuresthat must be provided by high quality database migration utilities:

• Do not use third party components for reading or writing the data since it prevents from getting the best performance of database migration
• Support recent versions of MySQL and PostgreSQL including their forks and cloud variations(Percona, MariaDB, Heroku, Amazon RDS and others)
• Optionsof merging and synchronizing PostgreSQL tables with MySQL data
• Tables customization (option to modify name, type and other attributes of table columns as well as exclude some columns from migration)
• Support of command line parameters in order to automate the database migration

MySQL to PostgreSQL converter is asoftware solutionhaving all thosefeatures. It is offered by Intelligent Converters, a companyworking in database migration field since 2001.

Besides the general capabilities the product also provides feature ofmigrating data that is result of user-defined SELECT queries. This powerful option allows to filter data being converted, to apply preprocessing on data via built-in functions and to combine multiple MySQL tables into single PostgreSQL table.

Visit https://www.convert-in.com/mysql-to-postgres.htm for more information about MySQL to PostgreSQL converter.