Page 136 - TCS ICT Book 8

The City School 2021-2022

Layer visibility: the eye shows that the selected layer is visible.

Linear gradient: shades from the starting point to the ending point in a straight line.
Live streaming: broadcasting of real-time, live, video to an audience over the internet.

Logical operators: similar to boolean expressions that return a boolean result.
Loop: a sequence of instructions that is repeated until a certain condition is reached.

Microsoft forms: allows Office 365 users to create custom surveys, quizzes, polls and
questionnaires in minutes.

Mirror gradient: mirrors the same linear gradient on either side of the starting point.
Not null: this constraint enforces that this field cannot be left unused.

Outer glow: add glows that emanate from the outside edges of the layer’s content.
Pattern overlay: fills the layer’s content with pattern.

Popups: adverts for products and services and other times they are phishing scams
asking you to enter personal details to claim an unbelievable prize.

Primary key: a key in a database that is unique for each record.
Private variables: variables that are accessible only to a certain part of the program

or code.
Properties: properties define the field’s characteristics and behaviour.

Public variables: are variables that are accessible to the whole program.
Query: a special “question” you apply to the database to find specific data and get the

information you want.
Radial gradient: shades from the starting point to the ending point in a circular

pattern.
Raspberry Pi: the Raspberry Pi, which is a single board computer (SBC), is a small

credit card sized computing device that can be used for a variety of purposes
Raspian-OS: raspbian is a Debian-based (32 bit) computer operating system for

RaspberryPi.
Raster graphics: a dot matrix data structure that represents a generally rectangular

grid of pixels (points of colour), viewable via a monitor, paper, or other display.
Record: a record is one unit of information. Every cell on a given row is part of that

row’s record.
Reports: offer a way to view, format, and summarize the information in your Microsoft

Access database.
Resolution: the number of pixels on a printed area of an image.

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