Hi Surendra,
I have seen the some tables are missed in M_CS_TABLES.
Anyways this is not very straight forward.
M_CS_TABLES contain only the column tables and would show the tables which are loaded to the memory. It also shows the tables which are not loaded to the memory but with the memory size as 0.
But one observation is that size of the fully loaded table was much less on memory then on disk. This means that data was further compressed before loading it into memory. Is it correct statement.
Yes, the memory is compressed, so the size will be much less.
Regards,
Ravi