Ch. 5 SG

Which of the following is NOT a problem associated with Big Data? - Big Data lacks quality. - Big Data can come from untrusted sources. - Big Data changes. - Big Data can be structured, unstructured, or semi-structured.

Big Data can be structured, unstructured, or semi-structured.

Africa collaborated with ________ to stop the Ebola virus outbreak in 2013 and 2014. Microsoft Google Amazon IBM

IBM

Data marts and data warehouses typically use ________. RFID OLTP ERP OLAP

OLAP

________ is the most popular query language used for interacting with a database. RFID TPS ETL SQL

SQL

A ________ is a group of eight ________. bit; bytes byte; bits field; files file; fields

byte; bits

________ refers to the maximum number of times an instance of one entity can be associated with an instance in the related entity. Data dictionary Modality Business rules Cardinality

cardinality

Suppose you work for XYZ Corporation. You know you can contribute 6% of your salary to a 401K and the company will match that 100% after 6 years of service because it is in the employee handbook. This is an example of ________. explicit information explicit knowledge tacit knowledge tacit information

explicit knowledge

All the information about you in your university's database is a(n) ________. database attribute entity instance

instance

Databases ________ inconsistency; this means ________. - maximize; the same data are stored in multiple locations - minimize; the same data are stored in multiple locations - maximize; various copies of the data do not agree - minimize; various copies of the data do not agree

minimize; various copies of the data do not agree

Normalization is a method for analyzing and reducing a relational database to its most streamlined form to ensure ________ redundancy, ________ data integrity, and optimal processing performance. maximum; minimum minimum; minimum maximum; maximum minimum; maximum

minimum; maximum

Data marts can be implemented ________ compared to data warehouses. more quickly at the same pace less quickly It depends on the situation.

more quickly

A circle with a "chicken leg" to the entity represents the ________ cardinality symbol. mandatory many mandatory single optional many optional single

optional many

A ________ generally describes an entity. file record byte field

record

Database systems minimize ________. security redundancy integrity independence

redundancy

Jana is a mobile startup designed to ________. - give app developers free access to other apps - offer free smartphones to people who make less than 20 cents an hour in China - reward users with data in exchange for collecting their personal information when sampling apps - charge users less money to use mobile data than they have to pay their telecommunication company

reward users with data in exchange for collecting their personal information when sampling apps

You recently inherited an Alvin and The Chipmunks "A Chipmunk Christmas" record. Since you don't have a record player, you need to find a way to convert the record into a CD. This is an example of data ________. clickstreaming rot scattering degradation

rot

________ is the cumulative store of subjective or experiential learning. - Tacit knowledge - Tacit information - Explicit knowledge - Explicit information

tacit knowledge

Industry experts estimate that 80-90 percent of data in an organization is ________. semi-structured unstructured structured part-structured

unstructured

Knowledge management is a process that helps organizations manipulate important knowledge that comprises part of the organization's memory, usually in a(n) ________ format. unstructured part-structured semi-structured structured

unstructured