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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: 

Demonstrate an understanding of the basic principles of spatial data 
SAQA US ID UNIT STANDARD TITLE
258659  Demonstrate an understanding of the basic principles of spatial data 
ORIGINATOR
SGB Geographical Information Sciences 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 12 - Physical Planning and Construction Physical Planning, Design and Management 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 6  Level TBA: Pre-2009 was L6  6 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "Reregistered" 		 2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
This unit standard has been developed for the GIS occupational area and is intended for persons who aim to achieve career advancement by gaining GIS skills leading to a qualification based on unit standards. A person who has successfully completed this unit standard will have an understanding of how to extract attributes from real world objects.

A person credited with this unit standard is able to:
  • Demonstrate an understanding of models of the real world.
  • Demonstrate a basic understanding of the vector data model.
  • Demonstrate a basic understanding of the raster data model.
  • Understand the concept of attribute extractions from real world entities.

    Specific range statements are provided in the body of the unit standard where they apply to particular specific outcomes or assessment criteria. 
    		•

    LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    The credit calculation is based on the assumption that learners are already competent in terms of the following:
  • Communication at NQF Level 5.
  • Mathematical Literacy at NQF Level 5.
  • Spatial awareness. 
    		•

    UNIT STANDARD RANGE 
    Range statements are included with specific outcomes as necessary. 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Demonstrate an understanding of models of the real world. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The need for models are understood and explained in relation to the real world. 

    ASSESSMENT CRITERION 2 
    A map is compared with that portion of the real world that it represents and differences are highlighted in terms the real world. 
    ASSESSMENT CRITERION RANGE 
    Additions, omissions, alterations.
     

    ASSESSMENT CRITERION 3 
    A model of the real world is understood and explained in terms of GIS. 

    ASSESSMENT CRITERION 4 
    Entities in the real world are identified and broken down into components. 
    ASSESSMENT CRITERION RANGE 
    Type classification, Attributes.
     

    ASSESSMENT CRITERION 5 
    Entity relationships are understood and explained in relation to spatial data. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to pertains, belongs, comprises, located in/on, borders on.
     

    SPECIFIC OUTCOME 2 
    Demonstrate a basic understanding of the vector data model. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The topology vector data model is understood and can be explained in relation to spatial data. 

    ASSESSMENT CRITERION 2 
    Vector data types used to represent entities of the real world are identified and can be explained in terms of spatial data. 
    ASSESSMENT CRITERION RANGE 
    Points, Lines, Polygons.
     

    ASSESSMENT CRITERION 3 
    Entities of the real world are understood and correctly identified in terms of their respective vector representations. 
    ASSESSMENT CRITERION RANGE 
    Points, Lines, Polygons, Networks, Surfaces.
     

    ASSESSMENT CRITERION 4 
    The basics of vector data models are understood and explained in Cartesian geometry. 

    ASSESSMENT CRITERION 5 
    The spaghetti data model is understood, can be explained and applied in relation to vector spatial data. 

    SPECIFIC OUTCOME 3 
    Demonstrate a basic understanding of the raster data model. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Tessellations are understood and explained in relation to raster data. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to regular tessellations such as squares, rectangles, triangles, hexagons.
     

    ASSESSMENT CRITERION 2 
    Coordinates are understood and explained in relation to raster data. 
    ASSESSMENT CRITERION RANGE 
    Base points, projected spatial grid.
     

    ASSESSMENT CRITERION 3 
    Attributes are understood and explained in terms of Raster data. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to classification attributes, RGB attributes, Band attributes.
     

    SPECIFIC OUTCOME 4 
    Understand the concept of attribute extractions from real world entities. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Object-Attribute relationships are understood and explained in terms of spatial data. 

    ASSESSMENT CRITERION 2 
    Scales of measurement are understood and explained in relation to attribute data. 
    ASSESSMENT CRITERION RANGE 
    Nominal, Ordinal, Interval, Ratio.
     


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner against this unit standard must be registered as an assessor with the relevant ETQA.
  • Any institution offering learning that will enable achievement of this unit standard must be accredited as a provider through the relevant ETQA by SAQA.
  • Moderation of assessment will be overseen by the relevant ETQA according to the moderation guidelines and the agreed ETQA procedures. 
    		•

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Essential embedded knowledge will be assessed through assessment of the specific outcomes in terms of the stipulated assessment criteria. Candidates are unlikely to achieve all the specific outcomes, to the standards described in the assessment criteria, without knowledge of the listed embedded knowledge. This means that for the most part, the possession or lack of the knowledge can be directly inferred from the quality of the candidate's performance. Where direct assessment of knowledge is required, assessment criteria have been included in the body of the unit standard. 

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Solve problems. 

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as a member of a team/group/organisation or community. 

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage oneself and one's activities responsibly and effectively. 

    UNIT STANDARD CCFO COLLECTING 
    Collect, organise and critically evaluate information. 

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively using visual, mathematics and language skills in the modes of oral and written presentations. 

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically (showing responsibility towards the environment and health of others). 

    UNIT STANDARD CCFO DEMONSTRATING 
    Display an understanding of the world as a set of related systems. 

    UNIT STANDARD CCFO CONTRIBUTING 
    Contribute to the full development of each learner and the social and economic development of society at large. 

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    Terminology:

    Entities:
  • The distinctly perceivable phenomenon in the real world that is not sub dividable into other phenomena of a similar kind.

    Feature:
  • A feature is called a defined entity that can be represented by an object.

    Objects:
  • The digital representation in the database of entities or features.

    Symbol:
  • The graphic representation of the entity-object. 
    		•

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  63689   Bachelor of Arts: Geographical Information Science  Level 6  Level TBA: Pre-2009 was L6  Passed the End Date -
    Status was "Reregistered"     		 2018-06-30   
    Elective  63589   National Diploma: Geographical Information Science  Level 5  NQF Level 05  Passed the End Date -
    Status was "Reregistered"     		 2023-06-30  CETA 
    Elective  63711   Bachelor of Geographical Information Science (GISc)  Level 7  NQF Level 07  Passed the End Date -
    Status was "Reregistered"     		 2018-06-30   


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    NONE 


    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.