13.2 File organisation and access

3 of 3 objectives have lessons · 0 studied · 0 secure

Lessons

File organisation — serial, sequential, random; file access methods; hashingUnderstand serial, sequential, and random file organisation; select appropriate organisation and access methods; describe and use hashing algorithms for file access. 10 min, not started

3 objectives

What Cambridge says you should be able to do, in our words. Codes are the topic number plus the objective’s position.

13.2.1

Understand the methods of file organisation, and select an appropriate method of file organisation and file access for a given problem.

Including serial, sequential (using a key field) and random (using a record key).

Taught in: File organisation — serial, sequential, random; file access methods; hashing · 1 question

13.2.2

Understand the methods of file access.

Including sequential access for serial and sequential files, and direct access for sequential and random files.

Taught in: File organisation — serial, sequential, random; file access methods; hashing · 1 question

13.2.3

Understand hashing algorithms.

Describe and use different hashing algorithms to read data from, and write data to, a random / sequential file.

Taught in: File organisation — serial, sequential, random; file access methods; hashing · 2 questions