database management pratice quiz 1

Which of the following ensures the correctness and consistency of data?

• data accuracy

• data recovery

• data privacy

• data security

Answer explanation

Problem storing and Accessing data

which of the following ensures that an employee accesses the min amount of data necessary to complete his/her job?

• data recovery

• data accuracy

• data security

• data privacy

which of the following prevents changes in the organization or storage of data from affecting the application that use that data

• storage neutrality

• application neutrality

• data independence

• persistent storage

which of the following describe objects important to a company or organization that are likely to be tracked in a database

• Quasidata

• formal data

• metadata

• business data

Data stored in a relational database is considered -------- data

• rigidly organized

• arranged

• highly structured

• fixed

which database model stores data in a tree like structure with roots

• hierarchical model

• object-oriented model

• network model

• relational model

The list below shows services preformed for a pet. The user wants ti delete a single pet. if deleted, demonstrate a deletion anomaly?

• sam

• spot

• none of the pets if deleted would cause a deletion anomaly

• any single pet when deleted cause a deletion anomaly

• lucky

which are of the following occurs when the same data is unnecessarily stored more than once

• duplicate data

• extra data

• copied data

• redundant data

which of the following storage medium uses light to read and write data?

• DVD

• solid state devices

• DNA

• magentic disk

which of the following is teh data you want to keep about an entity?

• object

• metadata

• attribute

• record