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AS level computin questions - please help! watch

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    (Original post by kikzen)
    seriously though, stop posting every minute !

    Give one advantage and one disadvantage of using an index in a database.

    +easy to search
    -requires more memory usage

    Give one reason for using multiple indexes in a database.
    thing of a library with many books of the same title and ISBN...


    sorry. but if i dont get this one. teacher will kill me.
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    (Original post by hello_forum)


    sorry. but if i dont get this one. teacher will kill me.
    if a bad teacher, argue back, some boy has done it so much he can just not come to Database lessons cos the teacher is awful and he nows more than him
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    (Original post by JSM)
    actually the most worrying thing is that im supposed to be doing the same course and no jack all.
    Use a QBE grid to show how you would find the name, form, sex and all the people who got between grade A and grade C

    k. i understand this, but in searching for people who got grade a-c, in the grade field (that i would create), would i put:

    A - C
    A, B, C
    or what?

    i eman, its easy with a number or age etc. coz u can use the less than, more than etc signs, but how would i put it for Grades A-C?
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    (Original post by hello_forum)
    Use a QBE grid to show how you would find the name, form, sex and all the people who got between grade A and grade C

    k. i understand this, but in searching for people who got grade a-c, in the grade field (that i would create), would i put:

    A - C
    A, B, C
    or what?

    i eman, its easy with a number or age etc. coz u can use the less than, more than etc signs, but how would i put it for Grades A-C?
    jesus christ, all i want is a little help and it takes me 2 hours to get anything?

    please can someone give me an answer to this, it isnt rocket science.
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    (Original post by hello_forum)
    jesus christ, all i want is a little help and it takes me 2 hours to get anything?

    please can someone give me an answer to this, it isnt rocket science.
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    (Original post by hello_forum)
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    (Original post by hello_forum)
    ..............................
    please, this is teh last bit of my homework. can somebody answer teh damn question above about the grid, how do i put grades a-c under teh grade field in the table?

    A-C?
    A,B,C ?

    please

    this is the last bit
 
 
 
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