Maths & Computer ScienceMaths & Computer Science

ALEVEL · computer science · OCR

1.3 Exchanging data

Explore compression, encryption, hashing, databases, networks and web technologies.

Specification

Specification sections

Choose a section to explore the MCS teaching resources.

1.3.1

Compression, encryption and hashing

Explore techniques for compressing, securing and verifying data.

Compression

Subtopic: (a)

Encryption

Subtopic: (b)

Uses of Hashing

Subtopic: (c)

1.3.2

Databases

Explore relational databases, data management, normalisation, SQL and transaction processing.

Relational Databases

Subtopic: (a)

Database Normalisation

Subtopic: (c)

SQL

Subtopic: (d)

Transaction Processing

Subtopic: (f)

1.3.3

Networks

Explore network characteristics, protocols, security, hardware and network models.

The Internet Structure

Subtopic: (a), (b)

Network Security and Threats

Subtopic: (c)

Network Hardware

Subtopic: (d)

Client-Server and Peer-to-Peer

Subtopic: (e)

1.3.4

Web technologies

Explore web technologies, search engine indexing and client-side and server-side processing.

HTML, CSS and JavaScript

Subtopic: (a)

Search Engine Indexing & PageRank Algorithm

Subtopic: (b), (c)

Server-Side and Client-Side Processing

Subtopic: (d)