1. Explain the difference between scalar and non-scalar data types. Give an example of each kind of data type to illustrate your explanation. 2. Explain the connections between business rules,...

1. Explain the difference between scalar and non-scalar data types. Give an example of each kind of data type to illustrate your explanation.

2. Explain the connections between business rules, integrity constraints and Boolean expressions.

3. Explain the purpose of views in the relational data model. Discuss how effectively they implement the external views of the ANSI/SPARC database systems architecture.