1. Student and Book are two entities, what is the cardinality between the two?

• Many to One
• One to Many
• Many to Many
• One to One

2. A description on a particular collection of data using the given data model

• Database
• Relation
• Schema
• None

3. Level of data at which entities or objects exist in reality is called

• Real world data
• Schema for real world data
• Meta data
•  Data about data

4. Which model operates at the lowest level of abstraction?

• conceptual
• internal
• external
• physical

5. User rights information is stored in

• Physical database
• Catalog
• Logical database
• Buffer

6. Data about data is database

• True
• False
• Partially True
• None

7. Which one of the following is NOT a characteristic of meta data?

• Data about data
• Describes a data dictionary
• Self-describing
• Includes user data

8. A relationship that involves three entities is called ___

• Unary relationship
• Ternary relationship
• Binary relationship
•  N-ary relationship

9. An entity type is

• defined when the database is actually constructed
• a specific type such as an integer, text, date, logical etc.
• a coherent set of similar objects that we want to store data on (e.g. STUDENT, COURSE, CAR)
• defined by the database designer

10. Which of the following is not a component of a DFD?

• Dataflow
• Datastore
• External entities
• Relationship between external entities