If you are starting a new site, application, or web portal, you need to know how to install PostgreSQL. This is one of the most popular DBMSs, which provides protection of information storage and convenient data management. This article will examine why a business chooses this particular IT product and how to install PostgreSQL on ubuntu 22.04.
What is PostgreSQL
PostgreSQL is a relational database management system based on the SQL query language. Relatively strict adherence to standards and the ability to build high-performance systems are the reasons for the popularity of this system today.
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Benefits of PostgreSQL
There are many DBMSs developed in the SQL language. The financial, manufacturing, retail, and logistics industries generally choose to use th postgresql server because of the product's key benefits.
- Compatible with popular operating systems. For example, installing PostgreSQLDebian or another strace java version, Windows, and Mac distributions is relevant.
- Access to powerful features such as nested transactions, multivariate concurrency control, and more.
- Compliance with strict requirements, including support for Unicode, international encodings, and multibyte character encoding.
- The availability of an open-source software license provides flexibility in the development process.
- Scalability of the amount of data and the number of users.
- Various types of indexing.
- Compatibility with an impressive number of programming languages and protocols.
- Developed support ecosystem.
- Access to JSON data.
- Expandability, including modifying tables.
- Reliability, security, and extensibility.
- Support text, image, sound, and video.
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Installation process
To install PostgreSQL on your tomcat9 ubuntu 22.04, you need to follow these steps:
- Update the Ubuntu package cache and then all available system programs
- Reboot the server to apply the installed updates;
- Install PostgreSQL from the system repositories with the command apt install PostgreSQLpostgresql-contrib -y
- Enable the service to start at system boot and start the database management service: systemctl enable postgresql.service; service postgresql start
- Check service status: service postgresql status.
PostgreSQL Data operations: how to create a database
PostgreSQL is a relational database management system designed to store and access related information items.
As an example of PostgreSQL for beginners, let's consider its work on simplified business processes.
>All information about the company's business processes, resources, and counterparties is stored in databases presented in tables. So in one of them, employees enter information about customers: name, contacts, payment information, etc. Any such value is located in a separate column and is called an attribute. And each record (line) is assigned a unique identifier - a key.
In the second table, only its identifier is indicated instead of the client's name. It becomes a common element of the two tables, thanks to which a relationship is established between them. When a new order processing request comes in, the system uses the key to look up up-to-date payment, address, and so on. Then the actual structured information goes to the warehouse, where the company's staff collects the order and sends it to the buyer.
Conclusion
In this article, you have explored how to install PostgreSQL on Ubuntu 22.04 LTS and explained how to perform some basic SQL operations.
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