week 3
Concepts:
• hierarchical database model - data organised and accessed in hierarchy structure
• network model - data organised and accessed through nodes and links
• entity relationship model - data organised and accessed through use of relationships
Tools and their application:
• entity relationship diagram (ERD):
o used to design relational databases
• data flow diagram (DFD):
o level zero and level one
o visual representation of information flow within a system
Last Updated
2023-03-29 10:55:40
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R3.3 The concepts and tools of data modelling.
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English
Maths
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Anonymous Assessment - Learners assess an anonymous piece of work containing deliberate mistakes against given success criteria.
Anonymous Assessment - Learners assess an anonymous piece of work containing deliberate mistakes against given success criteria.
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