June 2001
Intermediate to advanced
688 pages
19h 18m
English
When using fixed- or variable-length record-based databases, particularly with flat-text backing files, there are several items that the user can control. The Recno access method can be used to store either variable- or fixed-length data items. By default, the Recno access method stores variable-length data items. The Queue access method can store only fixed-length data items.
When using the Recno access method to store variable-length records, records read from any backing source file are separated by a specific byte value that marks the end of one record and the beginning of the next. This delimiting value is ignored except when reading records from a backing source file; that is, records ...