# Grade 12 Information Technology Notes

> CAPS-aligned Grade 12 Information Technology revision notes, broken down topic by topic with worked examples, diagrams, and key definitions.

- Page: https://www.hlayiso.com/grade-12/information-technology/notes

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## Topics

Each section has a free preview; the full notes are in the free Hlayiso account.

### Database Design and SQL

- [Database Design and SQL notes](https://www.hlayiso.com/grade-12/information-technology/notes/database-design-and-sql)
- [SQL: Data Manipulation and Parameterised Queries](https://www.hlayiso.com/grade-12/information-technology/notes/database-design-and-sql/sql-data-manipulation-and-parameterised-queries)
- [SQL: Queries, Functions and Joins](https://www.hlayiso.com/grade-12/information-technology/notes/database-design-and-sql/sql-queries-functions-and-joins)
- [Relational Database Design, Normalisation and Data Management](https://www.hlayiso.com/grade-12/information-technology/notes/database-design-and-sql/relational-database-design-normalisation-and-data-management)

### Object-Oriented Programming

- [Object-Oriented Programming notes](https://www.hlayiso.com/grade-12/information-technology/notes/object-oriented-programming)
- [Problem Solving with Objects and the ToString Method](https://www.hlayiso.com/grade-12/information-technology/notes/object-oriented-programming/problem-solving-with-objects-and-the-tostring-method)
- [OOP Concepts: Constructors, Attributes and Methods](https://www.hlayiso.com/grade-12/information-technology/notes/object-oriented-programming/oop-concepts-constructors-attributes-and-methods)

### Systems Technologies

- [Systems Technologies notes](https://www.hlayiso.com/grade-12/information-technology/notes/systems-technologies)
- [Internet Services and Communication Technologies](https://www.hlayiso.com/grade-12/information-technology/notes/systems-technologies/internet-services-and-communication-technologies)
- [Hardware, Performance Factors and Computer Systems](https://www.hlayiso.com/grade-12/information-technology/notes/systems-technologies/hardware-performance-factors-and-computer-systems)
- [Cloud Computing, Virtualisation and Emerging Technologies](https://www.hlayiso.com/grade-12/information-technology/notes/systems-technologies/cloud-computing-virtualisation-and-emerging-technologies)

### Solution Development and Software Engineering

- [Solution Development and Software Engineering notes](https://www.hlayiso.com/grade-12/information-technology/notes/solution-development-and-software-engineering)
- [Computational Thinking and Problem Solving](https://www.hlayiso.com/grade-12/information-technology/notes/solution-development-and-software-engineering/computational-thinking-and-problem-solving)
- [Software Engineering Principles](https://www.hlayiso.com/grade-12/information-technology/notes/solution-development-and-software-engineering/software-engineering-principles)
- [Arrays and Data Structures](https://www.hlayiso.com/grade-12/information-technology/notes/solution-development-and-software-engineering/arrays-and-data-structures)

### Social Implications

- [Social Implications notes](https://www.hlayiso.com/grade-12/information-technology/notes/social-implications)
- [Mobile Technologies, Privacy and IoT](https://www.hlayiso.com/grade-12/information-technology/notes/social-implications/mobile-technologies-privacy-and-iot)
- [Computer Crime, Security and Online Services](https://www.hlayiso.com/grade-12/information-technology/notes/social-implications/computer-crime-security-and-online-services)

## Frequently asked questions

### Are the Grade 12 Information Technology notes free?

Each Grade 12 Information Technology note section has a free preview on Hlayiso. Create a free Hlayiso account to read the full notes on the web or in the app; the free plan has daily limits.

### Are the notes aligned with CAPS and the ATP?

Yes. All Grade 12 Information Technology notes are written against the official CAPS curriculum and ATP so you only study what’s examinable.

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