Data Definition Language

The programmer specifies objects, their attributes and relationships: +------------------------------------------------------+ | DEFINE ESET | Data Definition | Cell: 'Calorimeter cells' | Language (DDL) | = (Rank = INTE [1,10] :'Rank or row', | | File = INTE [1,10] :'File or column', | detailed data | Energy = Real [0.0,100.] :'Deposited energy') | description | ... | with attribute | | types, ranges, | DEFINE RSET | properties of | | relationships | (Cell [0,1] -> [1,*] Cluster) | and comments |'Calorimeter cells merged to form cluster'; | | ... | +------------------------------------------------------+