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Fill in the blank. Worth 7 points each.

6. Feasibility analysis is concerned with analyzing potential application areas, identifying the economics ofinformation gathering and dissemination, performing preliminary cost-benefit studies, determining the

complexity of data and processes, and setting up priorities among applications.

7. Requirements collection and analysis involves interacting with potential users and user groups to identifytheir particular problems and needs.

8. The phases (or activities) of the life cycle are not strictly in sequence; The database Design andImplementation Process are common among and within the phases of the life cycle.

9. In the Conceptual schema design approach, the requirements from the different stakeholders are mergedinto a single set of requirements before the schema design begins.

10. In the conceptual approach to schema design, a schema is designed for each user group or applicationbased only on its requirements; in a view integration phase, these schemas are merged into a global

conceptual schema.

Discussion. Worth 10 points each.

11. What are the three goals of database design?The goal of conceptual schema design is a complete understanding of the database structure, meaning

(semantics), interrelationships, and constraints.

This is best achieved independently of a specific DBMS because each DBMS typically has idiosyncrasies and

restrictions that should not be allowed to influence the conceptual schema design.

2. The conceptual schema is invaluable as a stable description of the database contents. The choice of DBMS and

later design decisions may change without changing the DBMS-independent conceptual schema.

3. A good understanding of the conceptual schema is crucial for database users and application designers. Use of a

high-level data model that is more expressive and general than the data models of individual DBMSs is therefore

quite important.

12. Identify two of the three factors to consider in choosing one DBMS over another.a) Data complexityb) Dynamically evolving or growing datac) Data volume and need for control

13. Identify the three criteria to guide the choice of physical database design options.Response time

Space utilization

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Transaction throughput