We have found one software suitable in our database for this conversion.
Data from Excel spreadsheets (.xls, .xlsx) can be converted and turned into proper databases (such as .sdf files) either when they are imported to a database management software via some dedicated import function, or the same can be done with some kind of dedicated database conversion software. Only valid spreadsheet with properly structured data may be used for direct xls to sdf conversion, otherwise manual editing will be needed.
Updated: July 3, 2020
XLS
Files with xls extension are best known as spreadsheets from Microsoft Excel. A spreadsheet is basically a grid of cells sorted in rows and columns. Each cell can contain text, numeric or formula data. Excel XLS spreadsheets can be opened in most other similar programs, such as OpenOffice.org Calc.
SDF
Files with sdf file extension can be mainly found as compact SQL databases from Microsoft SQL Server.
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