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    CAMBRIDGE INTERNATIONAL EXAMINATIONS GCE Advanced Level MARK SCHEME for the May/June 2013 series 9691 COMPUTING   9691/33 Paper 3 (Written Paper), maximum raw mark 90 This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Examiners were instructed to award marks. It does not indicate the details of the discussions that took place at an Examiners’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge will not enter into discussions about these mark schemes. Cambridge is publishing the mark schemes for the May/June 2013 series for most IGCSE, GCE Advanced Level and Advanced Subsidiary Level components and some Ordinary Level components. www.maxpapers.com  Page 2 Mark Scheme Syllabus Paper GCE A LEVEL – May/June 2013 9691 33 © Cambridge International Examinations 2013 1 (a) (i)  Many CLUBs play in many LEAGUEs. [1] (ii)  E-R diagram [1] (iii) – Link table drawn [1] – 2 x one-to-many relationships [1] – primary key in CLUB links to foreign key in link table [1] – primary key in LEAGUE links to foreign key in link table [1] No mention of foreign keys scores max 1 for final mark points   (b) (i)  One CLUB has many PLAYERs  [1] (ii)  E-R diagram [1] (c)  The primary key of table CLUB – ClubName  [1] Matches to ClubName  in the PLAYER table [1] (d) Displays a ‘list’ of the player names and registration numbers [1] Who are female defenders [1] [Total: 12] 2 (a)  Meta language   Rules/Grammar (which describe a high level programming language // protocol specification) The syntax or structure of all program statements [2] (b) (i)  A rule which is defined in terms of itself NB Not ‘procedure’ ….. [1] (ii)  Rule 6 [1] (iii) www.maxpapers.com  Page 3 Mark Scheme Syllabus Paper GCE A LEVEL – May/June 2013 9691 33 © Cambridge International Examinations 2013 Expression Valid/Invalid Rules used [g] Valid Uses all the rules except 3 1 + 1[dc] Invalid – Starts with 7 – 3 not used – 3 not used – ends with 7 1 + 1[w,a] Valid – Starts with 7 – all rules used, incl, rule 6 twice – all rules used, incl, rule 6 twice – ends with 7 1 + 2 (c)   <DoubleCharacter> ::= <Character> < Character> <ListItem> ::= <Character> | <DoubleCharacter>  [3] [Total: 14] www.maxpapers.com  Page 4 Mark Scheme Syllabus Paper GCE A LEVEL – May/June 2013 9691 33 © Cambridge International Examinations 2013 3 (a)  Indexed addressing // LDX  [1]  (b)  Indirect addressing  Annotation to explain that address 203 is used as a forwarding address [2] (c) 48 [1]   (d)  ACC IX Output 0 165 166 166 1 93 94 94 (2) Mark as follows: Index register contain 0 [1] Sequence of first box (or subsequent sequence for the same instructions) [1] Index register contains 1 [1] Sequence for final box [1] (e)  Labels added to a (symbol) table // creates a list of addresses [1] Labels are later looked up to determine the actual address / Assembler must allocate addresses to labels [1] Mnemonic looked up to give binary code/machine code [1] Macro instructions are expanded into a group of instructions [1] The software makes two passes through the source program [1] MAX 3 [Total: 11] www.maxpapers.com
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