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Browse key terms and definitions across all GCSE subjects. Search by keyword or filter by subject and exam board.
23,110 key terms
Data packet
A small unit of data transmitted across a network, containing data and information needed to deliver it.
Data point
A plotted mark representing one pair of values from a results table.
Data point
A specified location, such as a hole centre or corner, whose position can be recorded using measurements or coordinates.
Data presentation
Showing evidence using tables, graphs, maps or visual methods so that comparisons and relationships can be examined.
Data privacy
Control over access to personal information and how it is collected, shared and used.
Data processing
Organising or calculating with collected information so that it can be compared and interpreted.
Data processing
Organising, summarising and calculating with collected data so that it can help answer an investigation question.
Data protection
Legal rules and organisational measures that protect personal data and govern how it is collected and used.
Data protection
Legal protection governing how personal data is collected, used, stored and shared, including people's right to access personal data held about them.
Data Protection Act 2018
UK legislation that works alongside the UK GDPR to regulate the handling of personal data and protect individuals’ rights.
Data redundancy
Unnecessary duplication of the same data within a database.
Data reliability
The extent to which research information can be trusted as a basis for business decisions.
Data representation
A way of displaying scientific information, such as words, a table, a graph, a diagram or symbols.
Datasheet
A manufacturer’s document specifying a component’s dimensions, connections, functions and operating limits.
Data structure
A way of organising and storing data in a computer so that a program can access and work with it.
Data subject
The living person whom personal data identifies or relates to.
Data table
An organised arrangement of data in labelled rows and columns.
Data theft
Unauthorised taking or copying of data, such as personal information or account credentials.
Data transfer rate
The rate at which data is actually transferred successfully over a network connection.
Data translation
Changing information from one representation, such as a table, into another representation, such as a graph, while preserving its meaning and values.
Data translation
Representing the same information in a different form, such as changing a table of measurements into a graph, while preserving its values, units and meaning.
Data type
The kind of data a field can hold, such as string, integer, real, date/time or Boolean.
Data validation
An automatic check that entered data meets specified rules before a program uses it.
Data visualisation
A table, chart, graph or diagram used to communicate data and make features such as patterns or comparisons easier to see.
Datum
A fixed point, line or edge from which measurements are taken.
Datum point
A fixed reference point from which positions or measurements are taken. Reference lines, edges and surfaces can serve the same purpose.
Daughter cell
A new cell produced by the division of a parent cell.
Daughter cell
A new cell produced when a parent cell divides.
Daughter nuclei
The smaller nuclei formed when a larger nucleus splits.
Daughter nucleus
One of the two smaller nuclei formed when a large nucleus undergoes fission.
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