The method of transferring information from one database administration system (DBMS) to a different is called Database Migration. It entails shifting information from a MySQL database to a PostgreSQL database. MySQL and PostgreSQL are each highly effective open-source relational database methods, however they differ in numerous points similar to syntax, information varieties, and options. 

Open supply RDBMs with sturdy programming and administration instruments can be found however particular varieties are MySQL and PostgreSQL.

As common, each database administrator desires an improve over what he presently makes use of and that’s the reason PostgreSQL is an possibility. Amongst its many advantages over MySQL are:

• Full compliance with ANSI SQL requirements.
• Many fashions of indexing are supported.
• Asynchronous commit is permitted.
• It helps two varieties of replication – synchronous and asynchronous.

With such advantages, it’s simple to conclude on the explanations anybody would make a change.

The migration of database could also be easy to advanced relying on to modules concerned however a schematic migration entails:

1. From the supply MySQL database, extract desk definitions within the type of DDL SQL statements.
2. Earlier than loading to the goal database, convert the statements to vacation spot format.
3. An intermediate storage similar to CSV information ought to obtain the exported information from MySQL database.
4. PostgreS database as vacation spot format, transformation of the incoming information is important.
5. Triggers, saved procedures and views current in MySQL database is extracted from MySQL database. These information needs to be within the type of supply code and SQL statements.
6. Based on the vacation spot format, the statements and supply codes are transformed. Loading into PostgreSQL database ought to observe.
7. Crosscheck database objects for full conversion.

Guide and bodily migration of database from MySQL to PostgreSQL is time consuming and tedious. In truth, information corruption or information loss could also be inevitable attributable to human issue. Due to this fact, it’s at all times good to automate the method through the use of a conversion software program.

For that cause, a specific software program firm had risen to the problem. Established in 2001, Clever Converters is a software program firm that has regularly strived to introduce programming instruments into the market. Their specialization contains information synchronisation, migration, and conversion. Considered one of their creations is the MySQL to PostgreSQL converter which automates the conversion course of. This converter is extraordinarily purposeful and sturdy with as excessive as 20,000 information made per second. Examine this to common trendy methods! This effectivity may be linked to the shortage of want for middleware parts to learn and write information.

Cloud options are variations of MySQL and PostgreSQL which can be supported. Additionally, database conversion is automated and scheduled with a customized command line model. As well as, synchronisation of information after migration with goal vacation spot is feasible – PostgreSQL database.

Moreover, this device permits filtration of information through SELECT queries. That is helpful when there’s must migrate chosen information to vacation spot database. This choices permits collection of specific columns and information, with transformation of information earlier than conversion into PostgreSQL format. Examples are;

• Filtration of information
• Election and renaming particular person columns

These steps are programming strains. Search on-line for detailed definition.

It can be crucial to switch the kind of column within the goal PostgreSQL database. That is executed by ‘customized column mapping’. This bodily characteristic permits the modification of default worth, kind, title, and NULL-attribute for columns and tables whereas different columns cab be exempted from conversion.

Knowledge can be exported into SQL script if the goal PostgreSQL server disallows distant connection. By mode of operation, a neighborhood file containing SQL-statements receives the supply database.  Then tables with respective indexes and constraints are created after which they’re crammed with information. The generated script file is imported to PostgreSQL server. The info administrator makes use of normal instruments like phpPgAdmin or psql at this stage.