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Data is stored in Tables consisting of rows (records) and columns (attributes). Each row is uniquely identified by a Primary Key . SQL Command Categories:

provides the bedrock for interacting with the Oracle Database, an object-relational database management system (RDBMS) produced by Oracle Corporation. SQL (Structured Query Language) is the set-based, declarative language used to query, manage, and protect data stored in these databases. 1. Key Concepts (Основни понятия)

A procedural extension to Oracle SQL that allows for variables, loops, and error handling . SQL Developer - Oracle Data is stored in Tables consisting of rows

Manages changes made by DML (e.g., COMMIT , ROLLBACK ).

Controls access to data (e.g., GRANT , REVOKE ). SQL Developer - Oracle Manages changes made by DML (e

To master Oracle SQL, you must understand how data is organized and how commands are categorized:

Used to define database structures (e.g., CREATE , ALTER , DROP ). Used to retrieve data (e.g.

Used to retrieve data (e.g., SELECT ).