Item Usage

Normal data processing access is through an item structure named CRSP_ITM. CRSP_ITM includes metadata describing the item as well as the actual data retrieved from the database. The metadata is set once by crsp_itm_open, but the data that is loaded can change each time the crsp_itm_read function is called.

The item handling functions hide the internal storage and report the data according to itm_name and keyset, which can be found from among the loaded items with the item look-up function, crsp_itm_find.