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Oracle - ( Oracle Tutorial )

Oracle is a relational database management system (RDBMS) that is used by many organizations to store and manage their data. It is one of the most widely used database systems in the world and is known for its scalability, security, and reliability.

Syntax

SQL statements in Oracle follow a standard syntax, regardless of the version being used. Here is an example of the syntax for selecting data from a table:

SELECT column1, column2, ...
FROM table_name
WHERE condition;

Here, column1, column2, etc. are the columns to be selected, table_name is the name of the table, and condition is the condition that must be met for a row to be selected.

Example

Here is an example of a SQL query in Oracle that selects data from a table called employees:

SELECT last_name, first_name, salary
FROM employees
WHERE department = 'Sales';

Output

The output of the SQL query above would be a table with three columns (last_name, first_name, and salary) and a variable number of rows, depending on how many employees meet the condition of working in the 'Sales' department.

Explanation

In the example above, we have selected the last_name, first_name, and salary columns from the employees table where the department is equal to 'Sales'. This query would return a table with employee information for all employees who work in the sales department.

Use

Oracle is commonly used to store and manage large amounts of data for businesses and organizations. It is used in a wide range of industries, including finance, healthcare, and government.

Important Points

  • Oracle is a widely used relational database management system.
  • SQL is used to query and manipulate data in Oracle.
  • SQL statements in Oracle follow a standard syntax.
  • Oracle is commonly used in many industries to store and manage data.

Summary

In summary, Oracle is a powerful and widely used relational database management system. It is known for its scalability, security, and reliability and is used in many industries to store and manage data. SQL is used to query and manipulate data in Oracle, and SQL statements in Oracle follow a standard syntax. Understanding Oracle is an important skill for anyone working with large amounts of data.

What is Oracle
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