Yes. You can do this, however there are a few things to keep in mind.
If you have multiple people viewing your database at the same time I would strongly suggest you split your database into a front end (data entry/reports/queries/etc) and a back end (tables). There is a tool in Access to do this for you. Once you perform the split you would give every person using the database their own copy of the FRONT END.
Second, Access really does not like to have more than about 5 - 10 concurrent users depending on how frequently the database is being used and how many currently have it open. If you intend to use the database for heavy duty data entry (people who do nothing but enter data all day) then I would really not suggest having more than about 2 or 3 concurrent users. If, however, the database is being used for light data entry or only 1 or 2 people are doing data entry and everyone else just needs to look up data then you should be ok with a lot more users as long as you restrict who can and can not add data either through your forms or network settings.
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