Data entry is one of those areas which gets little attention in the research area.
It is assumed that it "comes naturally". But there are essential points to consider - for instance
Which application is going to be used for data entry
What application are you going to use to analyse the data?
How much time do you have to decode data?
Ways to go about it
If you have any quantity of data a spread sheet is very slow.
On my current Celeron I have installed WordStar 4 (1983 vintage) because it is still the best data entry program I have come across - outside those used by professional data entry personnel.
WS4 in N-file mode gives you all the things you need -
I have not found another word processor which uses column-mode where you can isolate a column, or group of columns, and delete them or move them to another position.
You can switch to landscape mode in a word processor and get about 140 columns of data but if you have, for example, 50 items which are being entered over three columns you have a problem.
The value of unlimited line length is that you do not have word-wrap getting in the way of being able to do visual inspections of the data.
To be completed