Assignment#2 - revised marking guide- remarked by James Fei Xin

Student total mark:___/100

Datafile design marks: ___ /30
	
    /10 file creation follows own specs
	    if you do not have a design file,
 		-10  I will take all the 10 marks for this part.
 		     (but if you hand in a datafile.dat, anyway, I will try to 
 		     give the mark for datafile design base on that file .)
	    if you have a design file, follow the follow mark guide		    
	 	-2 without assumption
	 	Option (-1 if you have assumption but too strong )
	 	-2 without field and record structure design
	 	-2 without compaced data file
	    	-2 without example
	    	-2 no calculation for fields size and file size 
	    	-1 multi reports or report too long.
    /20 datafile design (based on generality and space efficiency)
    10 generality(base marks):
    	 Basicly if you deal with "***" and CR/LFs, you will have this 10 mark.
    	otherwise:
  >>>	-3 for who did not remove "***"
  >>>	-3 for who did not remove the CR/LFs
    	
    10 detail:(if you do extra compactions, you will go to this part base on the 10 
               base marks )
    	(the reduction will not more than 10)
    	-2 did not use binary encode
  >>>	-1 did not combine the fields
          (left the delimeters among the first 4 fields; the issue here is not
           field combination - but the fact that for best compaction you should
           not use a delimiter for fixed-length fields)
  >>>   -1 did not compact year 
          (here there are various ways to compact it: using number as binary 
           or extra assumptions)
  >>>	-1 did not compact the course code (name)
  >>>   -1 did not compact the semester (several ways of doing this: using binary bit
          or substituting by a letter)
  	-2 change the variable length field to fixed length field
    	-1 variable length primary key (allow the empty section field be ignored)
  >>>	+3 remove string pattern
	-1 Missing the empty field
  	-1 replace empty field with white space or other character
  		(only if you used the delimiters and replaced empty field with white space)
  	-1 extra delimiters (if you put unnecessary delimeters)	
	Option (-1 if you have assumption but too strong )
  	
           expected range between 10 and 20, where:
           10 = basic design
           20 = good design that includes course number and year
                represented as binary

Program marks: ___/70

    Testing diagnosis (TA chooses (X) one of the two below)
    (  ) Program doesn't compile or always crash when run
         Based on amount of code implemented and code style,
         your mark is ____ out of 25.

	If your program can not be compiled in the public lab;
	or your program alway crashed;
	or your program can not give any correct search results and insert records correctly,
        or your program can only return several correct results(no more than 5 in the all three test files)

   I will give mark bask on 
  		can be compiled 	      5 marks;
  		have a good class defination  5 marks;
  		code amount	  	      5 marks;
  		code style	  	      5 marks;
		can return some correct result 5 marks; 
    (  ) Program compiles and run for at least one of the ouputs

         CORRECTNESS AND EFFICIENCY:___/65
initializations and finalizations (5 marks)
>>>>	 no disocunt: no memory dynamic allocation: used fixed length array
>>>>	-1 :no memory release
	               
index creation (10 marks)
	-10 no index
>>>>    -3 index not in memory (if use a file for the index)
>>>>    -4 Did not use an array(using string for index)
>>>>    -1 using an index object array (inefficiency)
	-2 bad index design

parsing of desired operations (10 marks)
	-2 reading whole file into memory 
        (**** note by prof: this discount should have been greater; no change)
	-2 no error check
	(for the input of searching and insertion,
	 if such error cause program crash,the mark reduced will be increased to -5)

search: index part (10 marks)
>>>>    -2 linear search in sorted array
>>>>	-3 did not sort array and used linear search

search: datafile part (read and display) (10 marks)
	-2 reading whole file into memory
        (**** note by prof: this discount should have been greater; no change)         
	-3 without output for search result
>>>>	-1 operating seekg and seekp in the wrong way
>>>>	-2 Did not mapping the search result(the search result miss infomation from orginal data)
	-2 after insert, an instantly search can not find the inserted record 
>>>>    -1 search result did not display as the orignal data

insertion: appending datafile (10 marks)

	-2 insert duplicate record 
	-2 new record wasn't appended at the end of file
>>>>>   -1 after appending did not clean the fstream flag
>>>>>   -1 confused Seekp and Seekg
	-2 using close file instead of clear flag 
	-2 reopen file in every insert but did not close it 
	-2 inserted record did not match orginal data 

insertion: modifying index (10 marks)
>>>>>	-3 Did not Resize index: (discount only if it causes error/not discounted
           for fixed high value)
>>>>>	-3 did not resort the index or did not insert index item in order
>>>>>	-3 Did not add the new item into index
>>>>>	-3 recreate whole index 
>>>>>	-1 Resort the whole index
	
STYLE mark:___/5
            areas that need improvement:
            (the base mark is zero)
            -2 should return message after your operation
            -2 bad comment
            -2 huge code block (loop, and if-else)
            -2 bad class definition
            -2 meaningless variable name
            
attention:            	
(Base on the different cases, the mark may be a small difference.
 some very special error maybe not mention in this guide. 
 The reason of reduction will be added after the mark)