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database diff & merge
AccdbMerge logo for MS Access
aka AccdbMerge
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Project changes summary

1Click 'Open database' button on the left panel:

for MS Access, home tab blank

2Select your file and click 3'Open':

for MS Access, home tab open databases

Wait for a progress 4 and then repeat the same for the right panel 5:

for MS Access, home tab wait for progress

Wait a bit more for a progress again and here it is!

for MS Access, home tab schema changes summary

If your DB files are located in the same folder then this can be done even easier. 'Open database(s)' toolbar button allows to select two files and they are loaded in parallel.