Data management II
10 important questions on Data management II
What is a 1NF relation?
What is a 2NF relation?
What is a 3NF relation?
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Which type of functional dependency is not allowed in an ER diagram?
Within the functional dependency types, there is a distinction between mandatory relationships and optional relationships. Explain this difference.
Optional relationships are actions that can happen depending on the situation, e.g. when a product is never sold, there is at that moment in time no relationship between OrderDetails and Shipping.
Why do you want to split tables when sharing your data?
What is an E-R diagram?
What is a Data-Information-Knowledge Pyramid?
What are knowledge management systems?
Place data, information, knowledge and wisdom in the data hierarchy. Are these explicit or tacit knowledge?
Information = alomst always explicit
Knowledge = information in action, sometimes explicit, sometimes tacit
Wisdom = tacit
The question on the page originate from the summary of the following study material:
- A unique study and practice tool
- Never study anything twice again
- Get the grades you hope for
- 100% sure, 100% understanding
