Section 2
(Answer all questions in this section)

  1. An Entity Relationship Diagram is an example of a Physical Model. True or False?

True

False 

 

  2. Many reasons exist for creating a conceptual model. Choose three appropriate reasons from the options below.

(Choose all correct answers)

They model functional and informational needs.

They model the information flow of data.

They capture current and future needs.

They accurately describe what a physical model will contain. 

They capture implementation details of a physical model.

 

  3. A customized hat is an example of the conceptual model or the physical model?

Conceptual Model

 Physical Model 

   

  4. Which of the following are reasons we create conceptual models?

It facilitates discussion. A picture is worth a thousand words.

It forms important ideal system documentation.

It takes into account government regulations and laws

It forms a sound basis for physical database design

  All of the above


5. Examples of software are:

 Data entry webpages, Spreadsheets, Google and Yahoo search Engines, SQL Developer, Oracle Application Express 

Microsoft Word, Microsoft Powerpoint, Microsoft Excel, Mouse pad

Mouse, Cables, Microsoft Word, Microsoft Powerpoint

Monitor, Microsoft Word, Microsoft PowerPoint, SQL Developer


6. Examples of hardware are:

Data entry web pages, Mouse, Hard disk

Mouse, Hard disk, Monitor 

Monitor, Mouse, Printer, Printed Reports

Monitor, Mouse, Mouse pad, Cables and Wires, Hard disk