(a) A musician intends to record music on a storage medium. List four ways that the music file can organized in the storage medium. (b) State two basic oper...

(a) Four ways a music (data) file can be organised on a storage medium:

1. Serial organisation: records are stored one after another in the order in which they are created, with no particular key sequence.
2. Sequential organisation: records are stored in a sorted order based on a key field (for example, by track number or title), so they can be read in that order.
3. Random (direct) organisation: each record is placed at a storage address calculated from its key, allowing any record to be accessed directly without reading the ones before it.
4. Indexed (index-sequential) organisation: records are stored in sequence but an index is also kept, so a record can be found either directly through the index or by reading in sequence.

(b) Two basic operations on a computer file:

• Reading (retrieving/opening) data from the file.
• Writing (saving/storing) data into the file.

Other acceptable operations: create, open, close, update/edit, delete, append, sort, search.

(c) Explanation of terms:

(i) File: A file is a collection of related records stored together under one name on a storage medium and treated as a single unit. For example, a file may hold all the records of a musician's songs.

(ii) Record: A record is a collection of related fields that describe one item or entity within a file. For example, in a music file a single record may hold the title, artist, duration and file size of one song.