data management ch 1 quiz

Which of the following uses constraints to ensure any data entered into a system is valid and consistent?

• data concurrency

• data integrity

• data redundancy

• data isolation

which of the following is a database management system feature that prevents one user's work from interfering with another user?

• referential integrity

• SQL

• linking values

• concurrency control

• The row for Smith with a RateCode of 100.

• None of the customers, if deleted would cause a deletion anomaly

• The row for king with RateCode of 50

• The row for stevens with a RateCode of 200

• Any single customer, when deleted will cause a deletion anomaly

Which of the following is the term for data about the structure of a database

• pseudodata

• unidata

• quadidata

• metadata

• 0

• 3

• 5

• 6

whihc of teh following ensures that only authorized people access a company's data?

• data security

• data accuracy

• data privacy

• data recovery

which of the following occurs in a file system or list when adding data about one subject requires we also add data about another subject?

• insertion anomaly

• update anomaly

• maintenance anomaly

• deletion anomaly

Which of the following is the reason object - oriented databases have not replaced relational databases?

• OO databases do not have a standardized access language like SQL

• OO databases can store object data but not more common types of data like numbers and dates.

• Today's computers do not have processing power necessary to run OO databases

• OO dqatabases are much more expensive than relational datbases.

which of the following is teh combination of teh current internet with machines and devices of all tyoes

• the internet of things

• big data

• social networks

• cloud computing

A database contains data about persons. place, and things to be tracked. These items to be tracked are known as which of the following.

• entities

• links

• levels

• attributes