Search results

Q: Highlight the differences between the following types of diagrams (4 marks) - context diagram - data flow diagram - system flow chart made up btw, good practice though

thank you for that clever acronym, never would have thought of that

lol eric yeah, im sure its bytes remember, 8 bits is needed to display 1 character its already calculated as bytes in this respect you must be thinking of video, audio and image sizes, which when calculated, will give you the size in bits. only then is it necessary to divide the answer by 8...

in a database on the file server, i would assume

you simply add the set length or data width of each field e.g. 10 + 6 + 6 + 8 = 32 and times this by the number of records (each record will contain 32 characters and equal 32 bytes) this will give you the answer in bytes to convert it to kilobytes divide the answer by 1024

Q: What backup procedures would you recommend a booming video rental store, 'IPTSUX', should use to keep a copy of their stores database containing customer and video records. Justify your answer (3 marks)

yep that definition would do

not much, about 20 hours study total in the last 8 weeks or so. i dont think you really need to study that much with ipt, lol, most of it is logic its normal to feel burnt out 1-2 days after an exam, but you're going to have to push yourself, hehe, good luck =]

yeah but i am just saying, dont expect to be getting any marks for just a title :P id think the marking goes like ; 1 for using right symbols incl. squares for external entities, arrows for data flow 1 for having a single process in the middle describing the entire information system the...

i dont know about this; i have past hsc success one answers which all do not have a title; they just get straight to the diagram it would be assumed u are drawing a context diagram of a mobile phone, as the question asks it. i dont think its included as a mark

well you have the misinterpretation of messages. an e-mail usually cant convey emotions/facial expressions as well as tone of voice and body language so the message may easily be misinterpreted. this is self explanatory; many misunderstandings will occur, time will be wasted, trouble as well as...

i know what checksum is, im saying the two are similar i was thinking check digit relates to the entering of data into a form/db - BUT only if the db/form is on another device or location u wouldnt do a check digit if its on the same comp.. that sounds too stupid to be true lol wouldnt it be...

hmm my mobile.. LOL. lets see first i know theres a circle in the middle that says mobile phone system bahaha 1 mark there on the side, i guess an external entitiy would be the mobile user/customer and he would be inputting as well as receiving graphics/video/voice/sound (you can call this...

a check digit is an extra number added to the end which is calculated by an algorithm performed on the original number this is an extra piece of information which makes sure the entered data is the same as the received data (algorithm is performed once by the sending device, then again by the...

heyyy gloworm =] how was ext. 1

thanks for your contribution ^^ feel free to add as many questions as you want, the more the merrier and thanks for clarifying that Sam, lol. btw, i have found your textbooks very helpful and enjoyable this year, especially for SDD. your writing style is easy to follow and simple - highly...

The ten mark from trials statement is just a myth and generalization with no statistical basis also, remember they dont look at your trial mark, only moderated assessment My gripe with misadventure is that you will receive your assessment mark regardless of other factors including the...

ah ok. thats pretty unfair for those who are ranked low then; misadventure doesnt take into account that you could have improved in the final exam.

any idea if they use the actual trial marks or just a moderated assessment mark based on rank to derive an estimation? the form here says 'moderated assessment' so im abit unsure <- i think they take the rank only and how the rest of your class performs in the HSC e.g. if you're ranked 1/23 you...

yep that teacher is right a question - can someone describe what a 'many-to-many' relationship entails as well as provide an example of its practical use? i havent seen it yet