Computer

Chapter 3 Self Assesment

1. C

2. Data adminstrator

3. False

4. D

5. Database

6. Datacenters

7. A

8. B

9. Schema

10. B

11. A

12. True

13. Data warehouse

14. B

15. Predictable analysis

16.business intelligence

RQ 3

1.An attribute is a characteristic of an entity. Entity is a genera class of people, places, or things (objects) for which data is collected, stored, and maintained. So entity is part of an attribute.

3. collection of integrated and related data

5.

7.All the three managers are using the same database; hence, any report using the information will not be inconsistent. All the three managers can view the database as per their needs. The application systems can be developed independent of the database. The data validation and updating will be once and same for all. The data is shared by all users. The data security and privacy can be managed and ensured because the data entry in the database occurs once only and is protected by the security measures. Since the database is storage of the structured information, the queries can be answered fast by using the logic of the data structures.

9. Data center is a climate-controlled building or set of buildings that house database servers and the systems that deliver mission-critical information and services. They are becoming popular because due to it’s convenience and efficiencies.

11. The data dictionary (or data repository) or system catalog is an important part of the DBMS. It contains data about data (or metadata). It means that it contains the actual database descriptions used by the DBMS. In most DBMSs, the data dictionary is active and integrated. It means that the DBMS checks the data dictionary every time the database is accessed. The data dictionary contains the following information.

• Logical structure of database

• Schemas, mappings and constraints

• Description about application programs.

• Descriptions of record types, data item types, and data aggregates in the...