Oracle tutorial

Oracle tutorial provides basic and advanced concepts of Oracle. Our Oracle tutorial is designed for beginners and professionals.

Oracle is a relational database management system. It is widely used in enterprise applications.

What is Oracle?

Oracle database is a relational database management system (RDBMS) from Oracle Corporation. This article will explain a complete overview of the Oracle database, features, history, and editions . Before discussing the oracle, we will first need to know about the database.

What is a database?

A database refers to the organized collection of structured data stored electronically in a device . It allows us to access, manage, and find relevant information frequently. The flat file structure was extensively used to store data before the database system was invented. The relational database approach becomes popular in comparison to the flat file model . Because it eliminates redundant data . For example, suppose we have an employee and contact information stored in the same file. In such a case, the employees with multiple contacts will show up in many rows.

The RDBMS system manages the relational data. Oracle Database is the most famous relational database system (RDBMS) because it shares the largest part of a market among other relational databases . Some other popular relational databases are MySQL, DB2, SQL Server, PostgreSQL, etc.

What is the Oracle database?

Oracle database is a relational database management system  . It is one of the most popular relational database engines in the IT market for storing, organizing, and retrieving data.

Oracle database was the first DB that designed for enterprise grid computing and data warehousing. Enterprise grid computing provides the most flexible and cost-effective way to manage information and applications. It uses SQL queries as a language for interacting with the database.

Editions of Oracle database

Oracle database is compatible with a wide range of platforms such as Windows, UNIX, Linux, and macOS. It supports several operating systems like IBM AIX, HP-UX, Linux, Microsoft Windows Server, Solaris, SunOS, macOS, etc. In the late 1990s, Oracle began supporting open platforms like GNU/Linux.

The following is a list of Oracle database editions in order of priority:

• Enterprise Edition: It is the most robust and secure edition. It offers all features, including superior performance and security.
• Standard Edition: It provides the base functionality for users that do not require Enterprise Edition’s robust package.
• Express Edition (XE): It is the lightweight, free and limited Windows, and Linux edition.
• Oracle Lite:  for mobile devices.
• Personal Edition: It’s comparable to the Enterprise Edition but without the Oracle Real Application Clusters feature.

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