Technical-Overview.md

-This is how AIMSICD detects IMSI-Catchers, silent SMS and other threats.
+This documentation is especially for developers who wants to join the project and for everybody else who wants to know how AIMSICD detects IMSI-Catchers, silent SMS and other threats. 
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+**Basic Modules and I/O:**
 
 ![Program Modules](https://github.com/SecUpwN/Android-IMSI-Catcher-Detector/blob/master/DOCUMENTATION/Program_Modules.png)
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+**Database Tables:**
+![Database Tables](https://github.com/SecUpwN/Android-IMSI-Catcher-Detector/blob/master/DOCUMENTATION/aimsicd_myCellInfo_ER_2.png)
+**DEFAULT_MCC_TABLE:** (Mobile Country Code): This table holds data to identify your service provider (carrier) and country.
+**CELL_TABLE:** Data is collected by the Phone when it is connected to a Cell. (not from the table neighboring cells) 
+**OPENCEllID_TABLE:** Downloaded DB from OpenCellID.
+**LOCATION_TABLE:** Data is collected by the Phone. The location (lat/lng) of the phone and the Cell-ID it is connected to + timestamp.
+**SILENT_SMS_TABLE:** Protocol of incoming messages