# Cambridge International AS Level Computer Science (9618): Section 8: Databases & Normalisation

> Flat files vs relational databases, data redundancy, entity relationship diagrams (ERDs), normalisation (1NF, 2NF, 3NF), and SQL Data Definition Language (DDL) and Data Manipulation Language (DML).

- **Track:** [Cambridge International AS Level Computer Science (9618)](https://csmasters.dev/tracks/as-level-9618.md) (CAMBRIDGE AS LEVEL 9618)
- **Module:** Section 8: Databases & Normalisation
- **Total Lessons:** 4
- **URL:** https://csmasters.dev/tracks/as-level-9618/course_modules/8-databases

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## Module Lessons

### Lesson 1: [8.1 Flat Files vs Relational Databases](https://csmasters.dev/learn/as-level-9618/flat-files-vs-relational-databases.md)
- **Estimated Duration:** 15 mins
- **XP Reward:** 30 XP
- **Access Level:** Open Theory (All-Access Practice)
- **HTML Link:** https://csmasters.dev/learn/as-level-9618/flat-files-vs-relational-databases

### Lesson 2: [8.2 Entity Relationship Diagrams & Normalisation (1NF to 3NF)](https://csmasters.dev/learn/as-level-9618/erds-and-normalisation.md)
- **Estimated Duration:** 15 mins
- **XP Reward:** 30 XP
- **Access Level:** Open Theory (All-Access Practice)
- **HTML Link:** https://csmasters.dev/learn/as-level-9618/erds-and-normalisation

### Lesson 3: [8.3 SQL Data Definition Language (DDL)](https://csmasters.dev/learn/as-level-9618/sql-data-definition-language.md)
- **Estimated Duration:** 15 mins
- **XP Reward:** 30 XP
- **Access Level:** Open Theory (All-Access Practice)
- **HTML Link:** https://csmasters.dev/learn/as-level-9618/sql-data-definition-language

### Lesson 4: [8.4 SQL Data Manipulation Language (DML)](https://csmasters.dev/learn/as-level-9618/sql-data-manipulation-language.md)
- **Estimated Duration:** 15 mins
- **XP Reward:** 30 XP
- **Access Level:** Open Theory (All-Access Practice)
- **HTML Link:** https://csmasters.dev/learn/as-level-9618/sql-data-manipulation-language