The most widely used conceptual model is the ____ model.
implementation
ER
OO
internal
What model requires the most detail in its internal model?
network
relational
semantic
entity relationship
In the OO data model, a class' ____ represents a real-world action such as finding a selected PERSON's name.
inheritance
hierarchy
interface
method
Using network database terminology, a relationship is called a(n) ____.
member
owner
set
table
The ____ model adapts a conceptual model to a specific DBMS.
entity
internal
external
database
What type of relationship is expressed with the phrase "Employee manages Store"?
1:*
1:1
*:1
*:*
A ____ is the equivalent of a file system's record type.
root
child
segment
parent
The hierarchical database model is based on a ____.
tree structure
lack of a parent segment
lack of a child segment
matrix
The ERDM is primarily geared to business applications, while the OODM tends to focus on ____ applications.
educational
very specialized engineering and scientific
non-commercial Internet
personal
A(n) ____ model is independent of both hardware and software.
conceptual
external
developmental
logical
The network database models have ____.
a navigational system that yields simple design
a simple system that promotes efficiency
an owner/member relationship that promotes database integrity
a great deal of structural independence
Data models were developed to ____.
model real-world events or conditions
deposit data within a single file
keep data within multiple data repositories
allow DBMSs to maintain loose control over the database activities
A table is a matrix consisting of a series of row and column ____.
links
models
systems
intersections
What type of relationship is expressed with the phrase "Student takes Class"?
1:*
1:1
*:1
*:*
What modern development has drastically changed the role and scope of the database market?
object-oriented programming
the Internet
Y2K
mainframes
The object-oriented model ____.
adds semantic content
has no standards
has a simple navigational system
has a low system overhead that speeds transactions
One of the advantages of a relational database model is ____.
structural dependence
conceptual complexity
complex database design
easier database design
What is the fastest and most direct source of business rules?
company documentation
interviews with end users
the Internet
a database design document
Which model operates at the lowest level of abstraction?
conceptual
internal
external
physical
In response to the increasing complexity of applications, two new data models emerged: the object-oriented data model and the ____ relational data model.