Yeah, i got 93 for the CSSA paper.jwkhan said:cool cool.. which options do u do.. im stuck on image sizes calculation for multimedia... though ive noticed that hsc exams for ipt tend to be more simpler in terms of option topics compared to trials.. did u do cssa trial this yr? how did u find it?
Definitely not the best summary, but something for people whom might not get it still.1st Normal Form: Every field in a table must contain specific and unique information.
There should be no fields which contain more than one piece of information, or any fields which contain similar information.
For example, if you have a field for address, and you have someone's street name, house number, town, postcode and country, you have to split that field so that all of those things have their own friends.
Or if you have a name field and in it, the first and last name of a person, you gotta split it into 2 fields, one for the first and one for the last name.
2nd Normal Form: Redundancy
No one piece of data should appear more than once, regardless how, in any part of the database.
If there are repeated entries in a table, then the table probably needs to be split into more tables joined by foreign keys.
So if you have for example a date for someone's birthday, and then you also have their year of birth, that's incorrect, because the year of birth can be extracted from the date of their birthday, so the year of birth is redundant data.
Or if you have books and authors in a table, because books have many authors and authors can have many books, it would be stupid to put all this into one table, instead have an authors table, a books table, and a table to link the two.
3rd Normal Form: All fields in a table should be a direct description of the primary key (or keyfield as BoS might call it).
So for example, if you have a table about people, and one of the fields is about what kind of car they drive, and another is about how much that car costs - the field with the cost of the car has nothing to do with the person, and should be split into a different table.
Hey coolies, thanks for posting that dude. Explains it better than my notes do, that's for sure Did you go by the syllabus for notes? I just went by the textbook (Heinemann) which seems to have the right info to get me through past papers - I have to admit now that I've never looked at the IPT syllabus >_<Starcraftmazter said:As for normalisation, here's something I wrote only about a week ago. Brief summary.
There's an IPT syllabus?WTF!bbq said:Hey coolies, thanks for posting that dude. Explains it better than my notes do, that's for sure Did you go by the syllabus for notes? I just went by the textbook (Heinemann) which seems to have the right info to get me through past papers - I have to admit now that I've never looked at the IPT syllabus >_<
yeah databases is probably my worst topic tooNeoTokyo said:I'm fine with all topics except that blasted databases one. Normalizing will be the death of me.
I was studying maths, and then went on BoS to check whats up lulz.WTF!bbq said:Mm, figured as much. What the hell are you doing up this late ^____^ and how many pages of notes do you have? I cant tell if I'm over/under-doing it =/
Ahh don't worry about it mate. The Board of Studies say that you cannot take a calculator into the exam with you, but I wouldn't worry about it. If you can remember the formula, you can calculate it out.hey everyone!!
woah its awesome to see everyone studyin n preparing well for ipt! we'll all do fine.. except yeah im worried sick if i get some v hard calculation for multimedia!!! and whas the whole calculator business?