Hi FDibbins,
The way I have it set up is: I went to Data Connection -> Get Data -> From File -> From Workbook
I have 4 external files that I need to update, 2 are yearly, 2 are weekly. So my main concern is the weekly files.
Depending on the time of year I can have anywhere between 30k to 150k rows of data in each of those 2 files. So the great thing about using a data connection is that I just have to open up those two workbooks update them and then I just have to refresh my model. The Data connection puts everything into table format so it is nice. i.e. week 1 I might have 30k rows of data, just update those two separate workbooks and click refresh in the model, week 2 I have 35k rows of data, do the same and refresh the model
I understand I could do this without the data connections but I'm trying to build a tool where the end users do not need to mess with the model workbook itself, all they need to do is update the external files. It's just something I prefer since it makes the model file look leaner (I can use the very hidden option to hide tabs) and more like a tool than an excel workbook. The model is basically a tool that should be able to refresh data with 1 click and provide the output the end users need while look lean and presentable. The external data sheets are just that, data sheets that needs to be copy and pasted into.
I'm not much of an expert in Excel, apologies, what do you mean by using regular formulas?
I was also thinking the data connection will make the file itself leaner so if I can avoid additional formulas I will try to avoid them.
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