With PostgreSQL, users have support for objects, classes, and inheritance, just like in object-oriented programming languages. PostgreSQL is an object-based relational database, while MySQL is a relational database. Support triggers for certain actions after a row is updated.Support sequences as list of integers that can be generated using specific commands.Support creating custom functions (alongside built-in ones) to perform calculations and data manipulation on multiple tables.Support using extensions for their databases.Let users update the underlying data from the current view.InnoDB, MyISAM, Memory, CSV, Archive, and Blackhole Only supports certain data types, namely numeric, date and time, string (character and byte), spatial types, and JSON Integers, text, booleans, and customer-defined data types ![]() The difference is that through its mechanism, sharding can take place in multiple database instances even in multiple computers in different regions. ShardĪ shard is similar to a partition, as it’s also a cloned part of a large table. Partitioning is supposed to occur only in a single database instance. PartitionĪ partition in the database is one part of a large table that has been cloned to boost performance during data queries from the database. The primary and secondary database will be synchronized regularly using cron jobs, or automatically after every update in the database to ensure the secondary database is up to date with the data state in the primary database. Replication is the ability to copy data from a primary database to a secondary database so that the latter can serve as the former’s backup, when needed. This includes values stored in the database, the tables existing in it, and the relationships between tables. InstanceĪn instance refers to the current state of the database at a particular time. With a DBMS, users can also change data structure or create functions for easier data manipulation. Fundamentals of database management systemsĪ database management system (DBMS) is a set of software that allows users to manipulate or retrieve data stored in a database.
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