Quiz Database

What is the difference between "information" and "data"?

• Data turns into useful information. It is stored in a database and accessed by systems and users.

• Information and data have no differences - they are two words for the same thing.

• Information is held and understood only by users.

• Data is held and understood only by users.

Consider your school library. It will have a database with transaction details of the books that are borrowed by students. Is the total number of books out on loan in one given month considered Data or Information?

• Data

• Information

• Both

• Neither

Changes in computing have affected many of our day-to-day activities. Are all of the following activities example of this change? Yes or No?

In the past you used to use the phone system to call directory assistance to get a phone number. Today you can use your PC to look up a phone number online.

• Yes

• No

Databases are used in most countries and by most governments. Life, as we know it, would change drastically if we no longer had access to databases. True or False?

• True

• False

Data models show users the data that their Physical Model will contain. True or False?

• True

• False

Data models are drawn to show users the actual Data that their new system will contain; only Data listed on the Diagram can be entered into the Database. True or False?

• True

• False

An ERD is an example of a Physical Model. True or False?

• True

• False

Documenting Business Requirements helps developers control the scope of the system and prevents users from claiming that the new system does not meet their business requirements. True or False?

• True

• False

Which of the following attributes is suitable to be a Unique Identifier?

• Address

• Last name

• First name

• Social Security Number

In the following statements, find two good examples of ENTITY: Instance. (Choose Two)

• BOOK: Biography of Mahatma Gandhi

• VEGETABLE: grows

• TRAIN: runs

• DAIRY PRODUCT: milk