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Re: [Interim Solution] Re: FOSS equivalents of *OLD* database and spreadsheet tools?



On 2020-07-29 05:03, Richard Owlett wrote:

[A suggested] approach is literally orders of magnitude more than I want.


Consider these idealized cost functions for solution technologies A, B, and C:

    fA(t) = t*t + 1

    fB(t) = (t/3)*(t/3) + 10

    fC(t) = (t/10/*(t/10) + 100


Observe:

- fA has the lowest initial cost, but the highest cost over time.

- fB has an order of magnitude higher initial cost, but an order of magnitude lower cost over time.

- fC has the highest initial cost and the lowest cost over time.

- fA and fB intersect at time tAB.

- fB and fC intersect at time tBC.


The obvious strategy is to estimate t and pick the technology with the lowest cost:

-  For t < tAB, pick technology A.

-  For tAB < t < tBC, pick technology B.

-  For tBC < t, pick technology C.


The debate is over which cost function applies to which technology, and estimates of t.


I would put Excel and scripting language solutions into A. I would put Access into B (unfortunately, there does not appear to be a FOSS B), I would put .NET, Java, CORBA, LAMP, etc., into C. Using Perl, I estimate your app should be t < tAB.


David


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