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Database Systems (Describe the use of primary and foreign keys, indexes…
Database Systems
Describe and discuss the benefits and drawbacks of relational database systems and other contemporary database systems
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Describe the use of primary and foreign keys, indexes and links
A foreign key is a primary key from one table included in another table … to form links between them.
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PRACTICAL APPLICATION: Explain and apply entity relationship modelling and use it to analyse simple problems
See '2.5 - Database Systems', slides 6-11 for explanation of entity relationship diagrams.