AS level computin questions - please help!

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hello_forum
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#21
Report Thread starter 16 years ago
#21
(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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JSM
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#22
Report 16 years ago
#22
(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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hello_forum
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#23
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#23
(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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hello_forum
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#24
Report Thread starter 16 years ago
#24
(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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hello_forum
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#25
Report Thread starter 16 years ago
#25
(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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hello_forum
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#26
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#26
(Original post by hello_forum)
..............................
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hello_forum
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#27
Report Thread starter 16 years ago
#27
(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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