| Subject | English | Portuguese |
| IT | indexed sequential | sequencial indexado |
| comp., MS | indexed sequential access method | ISAM (A technique for indexing database records that allows sequential or random access of records. When records are accessed sequentially they are accessed in the order in which they were entered in the database, and when records are accessed randomly, the records are accessed through an index) |
| IT, dat.proc. | indexed sequential file | ficheiro sequencial indexado |