Google Links

Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Identify entities and relationships
   • Analyse business data to understand operations
   • Identify boundaries of the system
   • Identify entities, attributes, data types and relationships of data
   • Review business rules to determine impact
   • Document relationships in an entity relationship diagram
2. Develop normalisation
   • Identify suitable business data
   • Undertake normalisation of business data and document results
   • Compare normalisation results with entity relationship diagram
   • Reconcile differences between data
3. Validate model
   • Validate data model with client
   • Resolve issues or recommendations
   • Document completed data model
   • Submit to client for final approval

Performance Evidence

Evidence of the ability to:

document client business requirements

construct an entity relationship diagram

construct and document a data model

normalise the model

validate the model.

Note: If a specific volume or frequency is not stated, then evidence must be provided at least once.

---

Knowledge Evidence

To complete the unit requirements safely and effectively, the individual must:

fully describe:

database identifiers and their impact on database usability

normalisation rules and processes

type hierarchies, including sub-types, super-types and root-types related to development of structured data types

validation procedures and processes

describe the function and features of:

an approach to data modelling, such as the entity-relationship model

keys, e.g. unique keys, composite keys, primary keys and primary index

time stamps related to the use of keys

user defined types, structured types, reference types and user defined functions

data types and their application

summarise the particular business domain.

---