1
c790 Nursing Informatics (WGU) Databases
Questions with Correct Answers for a Specific
Exam Mail
database
Ans: a structured collection of individual data elements.
database management system (DBMS)
Ans: a software program that is used to manage, organize, and retrieve data
and information from a database
database model
Ans: model that is used to structure the data in a database
ie- relational database model (microsoft office)
Hierarchical Databases
Pretest - Stuvia US
, 2
Ans: contain many levels.
conceptualized as a family tree wherein each child has one parent. The root
is the head of the family. The branches, or second level, are the children who
are descended from the root. The third level, the grandchildren, are
descended from the second-level parents. Communication among the
descendants occurs by passing information up or down to the common
parent or child until the desired level is reached.
older mainframe DBMS
works well for data sets with one-to-many relationships
requires professional programmers for maintenance
network databases
Ans: designed to solve the redundancy problem that occurs with the
hierarchical model
Although this model is very similar to the hierarchical model, children are
permitted to have more than one parent. The records are linked together by
pointers that use a key piece of data (e.g., a patient medical record
number).
requires professional programmers for maintenance
relational database
Pretest - Stuvia US
c790 Nursing Informatics (WGU) Databases
Questions with Correct Answers for a Specific
Exam Mail
database
Ans: a structured collection of individual data elements.
database management system (DBMS)
Ans: a software program that is used to manage, organize, and retrieve data
and information from a database
database model
Ans: model that is used to structure the data in a database
ie- relational database model (microsoft office)
Hierarchical Databases
Pretest - Stuvia US
, 2
Ans: contain many levels.
conceptualized as a family tree wherein each child has one parent. The root
is the head of the family. The branches, or second level, are the children who
are descended from the root. The third level, the grandchildren, are
descended from the second-level parents. Communication among the
descendants occurs by passing information up or down to the common
parent or child until the desired level is reached.
older mainframe DBMS
works well for data sets with one-to-many relationships
requires professional programmers for maintenance
network databases
Ans: designed to solve the redundancy problem that occurs with the
hierarchical model
Although this model is very similar to the hierarchical model, children are
permitted to have more than one parent. The records are linked together by
pointers that use a key piece of data (e.g., a patient medical record
number).
requires professional programmers for maintenance
relational database
Pretest - Stuvia US
