Introduction PostgreSQL has established itself as one of the most powerful and versatile open-source database management systems. One of its many strengths lies in the support for logical replication, a mechanism that allows for the selective replication of data and schema changes between databases. This feature enables users to scale out their database architecture, improve…
Introduction: PostgreSQL supports a wide range of data types that allow you to store various kinds of information in your database. In this section, we’ll take a look at some of the most commonly used data types and provide a brief description of each. This will serve as a useful reference as you work with…
Introduction: Domains in PostgreSQL are essentially user-defined data types that can be created using the CREATE DOMAIN command. These custom data types allow you to apply constraints and validation rules to columns in your tables by defining a set of values that are valid for a particular attribute or field. This ensures consistency and data integrity within…
Tuples In the relational model, a tuple is a fundamental concept that represents a single record or row in a table. In PostgreSQL, a tuple is composed of a set of attribute values, each corresponding to a specific column or field in the table. This section will cover the various aspects and properties of tuples within PostgreSQL….
PostgreSQL is a powerful open-source relational database management system that offers a wide range of configuration options to optimize performance and customize the behavior of the database server. These configuration options are stored in various configuration files that control different aspects of the PostgreSQL server. These are the main configuration files in a standard PostgreSQL…
PostgreSQL Configuration Information Purpose Command Show PostgreSQL version sudo -u postgres psql -c “SHOW server_version;” Show Data Directory sudo -u postgres psql -c “SHOW data_directory;” Show Listen Addresses sudo -u postgres psql -c “SHOW listen_addresses;” Show Ports sudo -u postgres psql -c “SHOW port;” Show Max Connections sudo -u postgres psql -c “SHOW max_connections;” Show…
Introduction Streaming replication in PostgreSQL allows a standby server to stay up-to-date with the primary server in real-time or near real-time. Here’s a step-by-step guide to set up streaming replication in PostgreSQL 14: PostgreSQL Master name and IP address: Hostname : PGmaster IP Address : 192.168.0.210 PostgreSQL Slave/Replica name and IP address: Hostname : PGSlave…