Update README.md

README.md

@@ -17,6 +17,18 @@ The container makes available a MariaDB instance with the full database on popul
 
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 ## Specifications
+```
+Table           |Size (MB)|Rows (#)|
+----------------+---------+--------+
+eu_gen          |     1.18|    4891|
+eu_trans        |     1.98|    9007|
+geometry_columns|     0.02|       4|
+spatial_ref_sys |     0.02|       0|
+us_gen          |     4.44|   12008|
+us_trans        |    79.84|   94216|
+```
+![tables schema](FACT_power.png "Tables in DB")
+
 
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 ## Notes