C175 Test 1 Questions with 100% Correct
Answers
Unstructured data
Data does not exist in a fixed location and can include text documents, PDFs, voice
messages, emails
What is a broad definition of data?
Numbers that are captured on digital media
Raw facts that are captured on printed or digital media
Alphanumeric combinations that can be captured on media that a computer can read
Any information that can be transferred from print to digital
Raw facts that are captured on printed or digital media
What are data?
Facts that have been organized in a meaningful way
Facts that are the result of a query of a database system
Facts that are collected and stored in a database system
Facts that have been processed and used for decision making
,Facts that are collected and stored in a database system
What is a determining characteristic of unstructured data?
It does not allow copying and pasting.
It is easy to query and retrieve by business applications.
It does not follow a data model.
It is stored in rows and columns.
It does not follow a data model
Which is true about flat files?
They contain no internal hierarchical organization.
They have a limit of 256 records.
They can only contain two-dimensional data.
They are always encrypted.
They contain no internal hierarchical organization.
Which technology has no internal hierarchy?
Flat files
, Heap files
Hashed tables
Relational databases
Flat Files
How were data retrieved before database management systems?
Randomly from linked files
Sequentially from simple files
Using set operations on complex files
Using relationships between logical entities
Sequentially from simple files
What is the uniquely identifiable element about which data can be categorized in an
entity-relationship diagram?
Entity types
Primary keys
Answers
Unstructured data
Data does not exist in a fixed location and can include text documents, PDFs, voice
messages, emails
What is a broad definition of data?
Numbers that are captured on digital media
Raw facts that are captured on printed or digital media
Alphanumeric combinations that can be captured on media that a computer can read
Any information that can be transferred from print to digital
Raw facts that are captured on printed or digital media
What are data?
Facts that have been organized in a meaningful way
Facts that are the result of a query of a database system
Facts that are collected and stored in a database system
Facts that have been processed and used for decision making
,Facts that are collected and stored in a database system
What is a determining characteristic of unstructured data?
It does not allow copying and pasting.
It is easy to query and retrieve by business applications.
It does not follow a data model.
It is stored in rows and columns.
It does not follow a data model
Which is true about flat files?
They contain no internal hierarchical organization.
They have a limit of 256 records.
They can only contain two-dimensional data.
They are always encrypted.
They contain no internal hierarchical organization.
Which technology has no internal hierarchy?
Flat files
, Heap files
Hashed tables
Relational databases
Flat Files
How were data retrieved before database management systems?
Randomly from linked files
Sequentially from simple files
Using set operations on complex files
Using relationships between logical entities
Sequentially from simple files
What is the uniquely identifiable element about which data can be categorized in an
entity-relationship diagram?
Entity types
Primary keys
