Estimating size of DB Chunk

Hiya fellow Informixers, A question on estimating the size of a DB chunk. How good are the numbers reported by the dbschema utility on the row size, # of columns, and index size, in determining the space required by a row. i.e does index size == actual index size + overhead or index size == actual index size. Would these numbers represent the max size of a row in a table? I have a good estimate of the number of rows in my tables. Is the use of numbers reported by dbschema a fairly standard way of estimating total space requirements? Are there any other Informix utilities that I could use for my purpose?? Any and all responses would be greatly appreciated. Raj. -- =============================================================================== __ __ . / __/ / Raj Malhotra. / ( /_ / voice : (908)613 4313. __/ email : manmetha@gauss.rutgers.edu ===============================================================================