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c790 Nursing Informatics (WGU) Databases
Questions and Answers (Expert Solutions)
Q: database
ANS 🗹🗹: a structured collection of individual data elements.
Q: database management system (DBMS)
ANS 🗹🗹: a software program that is used to manage, organize, and retrieve data
and information from a database
Q: database model
ANS 🗹🗹: model that is used to structure the data in a database
ie- relational database model (microsoft office)
Q: Hierarchical Databases
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
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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
Q: 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
Q: relational database
ANS 🗹🗹: The basic structure in this model is a table. The database consists of
several tables. A unique field within the tables is used to combine or join the tables.
In contrast to users of hierarchical and network databases, users of relational
databases need to know only the name of a table in order to locate data
Q: object oriented database management system
ANS 🗹🗹: in a relational DBMS there is a separation between the data storage and
the manipulation methods. This separation of data and methods for manipulating
c790 Nursing Informatics (WGU) Databases
Questions and Answers (Expert Solutions)
Q: database
ANS 🗹🗹: a structured collection of individual data elements.
Q: database management system (DBMS)
ANS 🗹🗹: a software program that is used to manage, organize, and retrieve data
and information from a database
Q: database model
ANS 🗹🗹: model that is used to structure the data in a database
ie- relational database model (microsoft office)
Q: Hierarchical Databases
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
, Page | 2
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
Q: 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
Q: relational database
ANS 🗹🗹: The basic structure in this model is a table. The database consists of
several tables. A unique field within the tables is used to combine or join the tables.
In contrast to users of hierarchical and network databases, users of relational
databases need to know only the name of a table in order to locate data
Q: object oriented database management system
ANS 🗹🗹: in a relational DBMS there is a separation between the data storage and
the manipulation methods. This separation of data and methods for manipulating
