Weekend Test #1 Answer Key Published

1.Which of the following is not a characteristics of a relational database model

1. Tables
2. Tree like structures
3. Complex logical Relationship
4. Records

2. Commit is a

1. DDL
2. DML
3. DCL
4. TCL

3.Which level of Abstraction describes how data are stored in the data base ?

1. Physical level
2. Logical level
3. View level
4. Abstraction level

4.Third normal form is based on the concept of

1. Closure Dependency
2. Transitive Dependency
3. Normal Dependency
4. Functional Dependency

5.Referential integrity is directly related

1. Relation key
2. Foreign key
3. Primary key
4. Candidate key

6.Which of the following is not a type of Database Management System ?

1. Hierarchical
2. Network
3. Relational
4. Sequential

7.Relations produced from an E-R model will always be in

1. 1 NF
2. 2NF
3. 3NF
4. BCNF

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