Unit 1 Key Words

Question 1

Indentation

Answer 1

A style that helps to show the codes structure.

Question 2

Pseudocode

Answer 2

An informal English-like outline of an algorithm which can be converted to the programming language.

Question 3

Programming Paradigms

Answer 3

Standard guidelines and conventions (most people) used to develop and build computer codes and solve problems.

Question 4

Identifier

Answer 4

A value stored in the computers RAM. It is a way of accessing data for the programmer.

Question 5

Constants

Answer 5

Type of identifier that represents a value that will not change while a program is running.

Question 6

Variables

Answer 6

Type of identifier that represents a value that may change.

Question 7

Local Variables

Answer 7

Used within a block of code in which they are declared.

Question 8

Global Variables

Answer 8

Can be used anywhere in the program code.

Question 9

Operators (including mathematical, relational, boolean)

Answer 9

Special symbols which tell the program to perform specific tasks on it’s data. It has to be used in a specific order.
Mathmatical: Add, Subtract, Multiply and divide.
Relational: Defining relationship between two different values.
Boolean: Combines expressions together.

Question 10

Built In Functions

Answer 10

Functions that can be used to solve complex problems.

An example are formatting it’s appearance. Can also download from third party websites.

Question 11

Arithmetic Functions

Answer 11

Perform mathematical operations.

Question 12

String Handling Functions

Answer 12

Helps to perform IT Operations on strings.

Question 13

General Functions

Answer 13

Allows to input data and output messaegs.

Question 14

Validation

Answer 14

A process that checks to see if an input value makes sense before it is processed.

Question 15

Run Time Error

Answer 15

A problem that occurs when an application is being used. This results in the application locking/crashing.

Question 16

Range Check

Answer 16

This assess whether data is entered within a valid minimum to maximum range.

Question 17

Length Check

Answer 17

This asseses how many characters have been entered.

Question 18

Presence Check

Answer 18

Whether data exists or is present. Not left blank,

Question 19

Type Check

Answer 19

Asseses wheather data entered is of the correct data type. For example, age would need to be an integer.

Question 20

Format Check

Answer 20

Assess whether the data entered is in the correct format. For example, a postcode has two words, both three letters.

Question 21

Check Digit

Answer 21

A single character, obtained from an algorithm which is performed on a piece of data.

Question 22

Procedural Programming

Answer 22

Are written as a series of well defined steps which solve a set problem.

Question 23

Object Oriented

Answer 23

Objects are created from classes, which are modelled on real world things such as customers, bank accounts, products etc. Each class acts as a software blueprint that contains the thing’s state (data properties) and behaviour (methods or functions) in program code.

Question 24

Polymorphism

Answer 24

Allows the programmer to use one named function to perform a set task but alter it’s behaviour depending on it’s use.

Question 25

Event Driving Programming

Answer 25

It’s a popular paradigm for the development of a graphical application. It is more flexible for the user.

Question 26

Service Oriented Processing

Answer 26

Breaking down of complex problems into a collection of separate processes providing a specific service for client applications.

Question 27

Time Driven Processing

Answer 27

A form of event-driven programming where each process is triggered by a time based event.

Question 28

Mark Up Languages

Answer 28

A language used to specify the content but not formatting of a document in a structured manor using special tags.

Question 29

Translation

Answer 29

The process of translating a coded solution into another programming language.

Question 30

Ways to implement current code base

Answer 30

Exploring versions of the programming language.

Using improved third party function libraries.