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A Level OCR

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Unit 4: Exchanging data

Component 01

Unplugged Unit
Perfect for lessons away from computers or workshops.
4

Inside the Unit...

Download Free Sample 5.0mb

Areas Covered

This unit consists of six topics, each more substantial than a single lesson and intended to be covered over the course of a week.

  • Topic 1: Compression, encryption and hashing
  • Topic 2: Database concepts
  • Download sample lesson above
  • Topic 3: Relational databases and normalisation
  • Topic 4: Introduction to SQL
  • Topic 5: Defining and updating tables using SQL
  • Topic 6: Transaction processing
  • End of unit assessment

There are six worksheets, six homework tasks, and an examination-style assessment test, each with answers included in this unit.

Summary

This unit covers Sections 1.3.1 and 1.3.2 of the 2015 H446 specification. The first lesson covers the topics of compression and encryption. This is followed by four lessons on databases and SQL, with a final lesson on transaction processing. Each of the six topics may be spread over more than one lesson, especially if time is spent in the lessons going over homework tasks. Practical database examples are based around Microsoft Access.

What's included in the toolkit?

Toolkit

The A Level units have been written to satisfy the specification for Component 1 and Component 2 of the OCR H046/H446 Computer Science AS/A Level. Each unit contains:

  • PowerPoint slides for each topic
  • Detailed lesson plans
  • Learning objectives and outcomes
  • Worksheets and homework activities with answers
  • End-of-unit, exam-style assessment test with answers
  • Other material and links to online resources

What people say...

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Great work, easily the most clear and easily accessible book I have seen for our subject.

Michael Webb. Design and Technology Teacher, Linton Village College

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I am always very impressed with the clarity and quality of the lessons and textbooks.

J Lehman. Computer Science Teacher, Northampton School for Boys

Relevant Textbooks

Inside the Unit...

  • Download Free Sample 5.0mb

    Areas Covered

    This unit consists of six topics, each more substantial than a single lesson and intended to be covered over the course of a week.

    • Topic 1: Compression, encryption and hashing
    • Topic 2: Database concepts
    • Download sample lesson above
    • Topic 3: Relational databases and normalisation
    • Topic 4: Introduction to SQL
    • Topic 5: Defining and updating tables using SQL
    • Topic 6: Transaction processing
    • End of unit assessment

    There are six worksheets, six homework tasks, and an examination-style assessment test, each with answers included in this unit.

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