NZQA registered unit standard
7910 version 4
Page 1 of 3
Title
Demonstrate knowledge of computer data types and data structures
Level
5
Credits
7
Purpose
People credited with this unit standard are able to demonstrate
an understanding of computer data types, and describe
computer data structures.
Classification
Computing > Generic Computing
Available grade
Achieved
Explanatory notes
None.
Outcomes and evidence requirements
Outcome 1
Demonstrate an understanding of computer data types.
Evidence requirements
1.1
A definition of data types distinguishes between them and includes examples.
Range
1.2
A description of the use of coding systems in a business environment
distinguishes categories of coding systems and includes examples.
Range
1.3
data types include – alphabetic, alphanumeric, numeric, integer,
floating point, real, binary, character, digit, date, time, Boolean.
coding systems may include but are not limited to – ASCII,
Unicode, barcodes, two dimensional barcodes, UPC, ISBN.
A minimum of three coding systems.
Data manipulation operations are performed on numeric data types.
Range
manipulation operations include – addition, subtraction,
multiplication, division.
A minimum of two manipulations are performed for two numeric
data types.
NZQA National Qualification Services.
SSB Code 130301
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
1.4
7910 version 4
Page 2 of 3
Data manipulation operations are performed on text based data types.
manipulation operations may include but are not limited to –
concatenation, trim, chop, search and replace, length.
A minimum of two manipulations are performed for two text based
data types.
Range
Outcome 2
Describe computer data structures.
Evidence requirements
2.1
The description distinguishes between and provides examples of types of
computer data structures.
Range
2.2
database, file, record, field, key field, array, stack, queue, list, tree.
The description distinguishes between and provides examples of types of
computer files.
Range
2.3
serial, sequential, relative/direct, index sequential, random.
The description distinguishes between and provides examples of types of
computer databases.
Range
2.4
hierarchical, network, relational, object oriented.
The description explains the effect of operators on data structures.
operators include – amend, insert, delete, retrieve;
data structures include – array, stack, queue, list, tree.
Range
Planned review date
31 December 2017
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
8 July 1996
31 December 2015
Revision
2
28 November 2000
31 December 2015
Review
3
19 November 2010
31 December 2017
Rollover and
Revision
4
16 April 2015
N/A
Consent and Moderation Requirements (CMR) reference
0011
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
NZQA National Qualification Services.
SSB Code 130301
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
7910 version 4
Page 3 of 3
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Comments on this unit standard
Please contact NZQA National Qualifications Services nqs@nzqa.govt.nz if you wish to
suggest changes to the content of this unit standard.
NZQA National Qualification Services.
SSB Code 130301
 New Zealand Qualifications Authority 2016