Manipulation & ProcessingManipulation & Processing

Batch ProcessingBatch Processing Interactive ProcessingInteractive Processing Transaction Processing Transaction Processing - NEW- NEW Real-time ProcessingReal-time Processing

IT02 Pseudo Real-time IT02 Pseudo Real-time ProcessingProcessing

Part Question ICT2 January Part Question ICT2 January 20012001

(a) Explain what the term batch processing means. (3

marks)

(c) Explain what the term transaction processing

means. (3 marks)

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Some key pointsSome key points

Batch Processing allows efficient processing of a large volume of documents all of the same type.

all data is collected together

over a set period of time/into batches of a set size

to be processed in one computer run

without any human intervention

Some key pointsSome key points

Transaction processing

deals with each set of data as it is submitted.

Each transaction is completed,

before the next is begun.

Manipulation & ProcessingManipulation & Processing

Data asData as

TextText - stored, retrieved, edited, - stored, retrieved, edited, searched, deleted etc.searched, deleted etc.

PicturesPictures - stored, cropped, resized - stored, cropped, resized etc.etc.

NumbersNumbers - arithmetic calculations - arithmetic calculations etc.etc.

SoundSound - sampled, stored, edited etc. - sampled, stored, edited etc.

Dissemination and Dissemination and DistributionDistribution how information is how information is displayeddisplayedTextTextTablesTablesGraphics (static moving)Graphics (static moving)SoundSound

and what form/methods are used for and what form/methods are used for distributiondistribution

Hard/soft copyHard/soft copye-mail, presentation, formal report etc.e-mail, presentation, formal report etc.

Hardware; Nature, Hardware; Nature, Capabilities & LimitationsCapabilities & Limitations

Characteristics, Capabilities Characteristics, Capabilities and Limitations of:and Limitations of:

Input DevicesInput Devices

Output DevicesOutput Devices

Storage DevicesStorage Devices

Communications DevicesCommunications Devices

Question ICT2 January Question ICT2 January 20012001

3 State a suitable medium for transferring sound files, and give a reason for your choice.

(2 marks)

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Answer ICT2 January 2001Answer ICT2 January 2001

3 Sound files are most commonly 3 Sound files are most commonly transported these days using transported these days using Compact Disks . We buy them all Compact Disks . We buy them all the time. CDs are used because the time. CDs are used because they are quite cheap to produce they are quite cheap to produce and can hold a lot of data, making and can hold a lot of data, making them prefect for albums.them prefect for albums.

What the Principal What the Principal Examiner saidExaminer said

Question 3

This question was generally poorly answered with candidates not realising that the medium for the transfer of files was required e.g. CD-ROM, CD-R/W. Either the format of the sound files was stated e. g. ‘wav’ or a method of transfer e. g. e-mail.

Security of DataSecurity of Data how to look after your how to look after your datadata

PrivacyPrivacy•knowing who is allowed to see the dataknowing who is allowed to see the data

SecuritySecurity•keeping data safe from what shouldn't keeping data safe from what shouldn't

happen to ithappen to it

IntegrityIntegrity•making sure that data doesn’t become making sure that data doesn’t become

corrupt or have errors introduced corrupt or have errors introduced during processingduring processing

Network EnvironmentsNetwork Environments

ElementsElements•HardwareHardware•SoftwareSoftware•Communications and topologyCommunications and topology

CharacteristicsCharacteristics

LAN versus WANLAN versus WAN

Human/Computer Human/Computer InterfaceInterface

HCIHCI TypesTypes

•GUIGUI•WYSIWYGWYSIWYG•Menu DrivenMenu Driven•Command LineCommand Line•Natural LanguageNatural Language

Natural LanguageNatural Language

Common User InterfaceCommon User Interface

6 All the staff in a small office use the same word-processing, spreadsheet and database packages. These packages all have a common user interface.

(a) Give four advantages of having a common user interface. (4 marks)

Ideas to include in an Ideas to include in an answeranswer

ease of transfer of skills to different packages shorter familiarisation/learning time after learning first package less training costs for employer greater range of tasks/software accessible to

users confidence building for naive users

What the Principal What the Principal Examiner saidExaminer said

Few candidates read this question carefully enough, and did not realise that the advantages required referred to the ‘Common User Interface’ shared by the packages and gave answers about ease of transfer of data between the packages or about being able to use different computers within the office.