Microsoft Works has been discontinued years ago, unfortunately it is the only software that can be used in order to convert .wdb files (Works databases) to .xlr files (Works spreadsheets), which is what wdb to xlr conversion actually represents.
If you really need this, the best way would be to find some version of Works either on Internet or on CD bundled together with some old notebook. Back then MS Works was commonly given with new laptops and computers. Without MS Works it will be very hard to perform WDB to XLR conversion.Open WDB file Open XLR file
An older office and productivity suite for Windows