7.1.4+Partially-Indexed+Sequential+File+Organization

=__**Partially-Indexed Sequential File Organization**__=


 * For Fully-Indexed File Organisation see page ** media type="custom" key="10369616"

Partial indexed sequential file organization is when a sequential file is indexed by keys using ranges of records wherein the index and records are ordered. This is done by accessing the first file, the index file wherein all other file addresses are stored in. From the address the files linked in the index are accessed.

ex. for records 0001 to 0100 the index key is A, for records 0101 to 0200 the index key is B

__**Example:**__
index file record file
 * index key || record ||
 * A || 0001 ||
 * B || 0101 ||
 * C || 0201 ||
 * D || 0301 ||
 * record || belongs to file ||
 * 0001... || do.this ||
 * ...0100 || super.help ||
 * 0101... || cube.make ||
 * ...0200 || cube.move ||
 * 0201... || cube.rotate ||
 * ...0300 || polygon.make ||
 * 0301... || polygon.getsnumberofsides ||

Created by: Daniel Gillo Last modification: 5th September 2011

Sources:
 * Jones, Richard. __Computer Science Java Enabled__. Victoria: IBID Press, 2004