Hi Ben,
You can get all the info on tables / column views from the below system tables :
M_CS_ALL_COLUMNS - Runtime information of all columns of column tables, inclusive internal ones
M_CS_COLUMNS - Runtime information of columns of column tables
M_CS_PARTITIONS - Partition information of column tables
M_CS_TABLES - Runtime data of column tables
M_RS_TABLES - Information on row tables: detailed table sizes and record count
M_TABLES - Information on row and column tables
TABLES - Available tables
TABLE_COLUMNS - Available table columns
CS_VIEW_COLUMNS - Columns defined for column store join views
VIEW_COLUMNS - Available view columns
-Avinash