AS & A Level Information Technology (9626) — May–June 2024, Paper 13

A relational database has been created for customer orders. The entities and attributes are CUSTOMER (CustID, Firstname, Familyname, Address1, Town, Zipcode), ORDER (Ordercode,…

Unauthorised people can access personal data in different ways. Describe what is meant by the term: pharming.

In an expert system, the inference engine uses reasoning that consists of backward or forward chaining. Explain the differences between backward and forward chaining.

Describe the terms absolute and relative cell replication, giving an example of each.

A college uses a database to store student records. Each student has a unique ten-digit student number. The database stores the examination scores of each student. The maximum…

The environmental conditions around a chemical factory need to be monitored to make sure the environment is safe from pollution. Describe how data logging could be used to help…

Draw a program flowchart, in the space provided, that will allow an examination mark to be entered and then output an appropriate message giving the correct grade, as shown in the…

Explain why the following technique could be used when editing a video: Creating credits.

A car park barrier opens automatically when a vehicle approaches and closes when the vehicle is clear of the barrier. Describe how a microprocessor could be used to control the…

Describe the benefits and the drawbacks of using the csv file format to save data.