Hi,
You could import your Excel data into SQL Server, and manage them in SQL Server database. Using such method as : Import data from Excel to SQL Server
Then using SSRS - the reporting service of SQL Server to create reports and show them to your end user .
I need a separate web interface for importing data manually
I have not quite understood how you get you data, were they not in Excel ? But of course you could get data from web interface and store them in SQL Server.
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