Help Need For Expressions Builder

Aug 1, 2006

Hi experts

I have some problems consists of using Conditions.
I have 4 tables in Access:
tbl1_School names, addresses, ID_Number etc..
tbl2_ School features with Number of Clesses, Number of Students, total Area etc.
tbl3_teaching stuff with names, occcupations, Ages ets. and
tbl4_nonteaching personal with names, occupations. ages, etc.

References is ID_Number of schools
I make Query with relations, but do know how to build Expressions Builder for this:
Question 1.
a)If school have between 300&500 Students there are ig.18 teachers,
b)if schools have between 500&800 Students there are ig.25 teachers and until 1500 Students there are ig. 50 teachers.
Question 2.
c)if school have area until 400 m^2 there are needed ig. 8 nonteaching personel,
d)if school have from 400 till 600 m^2 there are needed ig. 15 nonteaching personel.

Numbers I specified like examples ig. were prescribed bye regulation.

If someone want to help me how can I use Expression Builder or VBA Code it would be appreciated.

It means I should use Condition Commands.

Thank You for help.

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