schema johor

8/13/2019 Schema Johor

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26. Control website access

Keyword Blocking

(Halangan /Tapisan Kata Kunci)

Can lead to criminalact such as exploitation

towords women/children.

Can lead sexual addiction

Can develop low moral values / immorality.Site blocking andweb rating system.


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27. NETWORKING

Type of Computer Networks

LAN, MAN, WAN

Type of Network Architecture

PEER TO PEER & CLIENT SERVER

Type of Network Topology

BUS , RING, STAR

Network Communications Technology

INTERNET, INTRANET, EXTRANET


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PRIMARY STORAGE

ROM (Random Access Memory) RAM (Read Only Memory)

Permanently stored inside the computer.

Non Volatile.

Main memory in a computer, can be read

and written. Volatile.

Programs in ROM have been pre

recorded. stored the data n programs by

manufacturer and cannot be changed.

Store data n programs can be accessed

directly by the processor.

Hold temporary instructions and data

needed to complete tasks.


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MEDIUM OF DELIVERY

WEB BASED

LIMITED IN GRAPHICS ,

VIDEO, SIZE AND

RESOLUTION. INFORMATION CAN BE

CHANGED, DAMAGED AND

DELETED.

INFORMATION CAN BEUPDATED EASILY.

CD BASED

CAN STORE HIGH QUALITY /

RESOLUTION GRAPHICS

AND VIDEO. INFORMATION PERMANENT

AND CANNOT BE CHANGED.

INFORMATION DIFFICULT

TO UPDATED OR CANNOTBE UPDATED.


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Structured Approachis a computer programming

techniquein which the program is divided

into moduleslike functionor subroutine.

GetInput (x, y)

z = Process (x, y)

DisplayResult (z)

SubGetInput (x as integer)

Input Number 1 ; xInput Number 2 ; y

End Sub

FunctionProcess (x as integer) as integer

Process = x + yEnd Function

SubDisplayResult (x as integer)

Print x;+;y;=;z

End Sub


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Object Oriented Approachis a computer programming

techniquesbased on the concept of an object thatcombine both dataand the functioninto a single unit.

Class aCircleConst PI = 3.142

Dim mRadius As Single

Function Diameter() As Single

Return 2 * mRadius

End Function

Function Area() As Single

Return PI * mRadius * mRadius

End Function

Function Circumference() As Single

Return 2 * PI * mRadius

End Function

End Class

Dim myCircle As New aCircle

myCircle.Radius = 10

Print myCircle.Area

Print myCircle.Diameter

Print myCircle.Circumference


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PROGRAMMING APPROCACH

STRUCTURED

USES A TOPDOWN

DESIGN MODEL

DIVIDES PROGRAMMING

PROBLEM INTO MODULE

LIKE FUNCTION.

SUITABLE FOR SMALL AND

MEDIUM PROJECT

OOP(OBJECT ORIENTED APPROACH)

USES OBJECT APPORACH.

PACKAGES THE DATA ANDFUNCTION INTO A SINGLE

UNIT.

SUITABLE FOR BIG PROJECT


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Primary key is a field thatcontains a value uniquely

identifies each record

in the table.

A foreign key is a field ina relational table that

matches the primary

key column of another table.


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Data types Explanation

Integer(Number)

Integer data type contains any wholenumbervalue that does not haveany frictional part.

Double

(Number)

Double data type contains anydecimal numbervalue that has a

fractional part.

String(Text)

String data type contains a sequenceof character.

Boolean(LogicalValue)

Boolean data type contains either atrueor falsevalue.

DateDate data type contains dateandtimevalue.


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Mathematical Operator

ComparisonOperator

Logical Operator

An operator is a symbol that causes VB to take an action

to perform mathematical

operations

to comparetwo value and

return value whether true or false

to perform logical operationsand

return value whether true or false


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MathematicalOperator

MeaningLogical

OperatorMeaning

+ Plus AndAnd

Operator

- Minus OrOr

Operator

* Multiply Not

Not

Operator

/ Divide


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ComparisonOperator

MeaningComparison

Operator

>

Greater

than>=

Greater

Than or

equal

< Less than


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TYPES OF OPERATORS

MATHEMATICAL OPERATOR

to perform mathematical

operations such as plus orsubtract.

LOGICAL OPERATOR

to perform logical

operationsand returnvalue whether true or false

such as checking the

condition of two Boolean

values , using AND, OR ,NOT .

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