Chapter 1-2 Flashcards
A noun in a business rule translates to a(n) _____ in the data model.
A) relationship
B) entity
C) constraint
D) attribute
B) entity
_____ data exist in the format in which they were collected.
a) Unstructured
b) Historical
c) Structured
d) Semistructured
a) Unstructured
A verb associating two nouns in a business rule translates to a(n) _____ in the data model.
a) relationship
b) attribute
c) entity
d) constraint
a) relationship
Accurate, relevant, and timely information is the key to ____.
a) good decision making
b) knowledge
c) data management
d) understanding
a) good decision making
Even when a good database blueprint is available, an applications programmer’s view of the data should match that of the manager and the end user.
A) True
B) False
B) False
The _____ model is the end users’ view of the data environment.
A) conceptual
B) abstract
C) internal
D) external
D) external
A(n) _____ is anything about which data are to be collected and stored.
A) relationship
B) constraint
C) entity
D) attribute
C) entity
_____ provide a description of the data characteristics and the set of relationships that link the data found within the database.
A) Queries
B) End-user data
C) Schemas
D) Metadata
D) Metadata
The only way to access the data in a database is through the DBMS.
a) true
b) false
a) true
The term _____ refers to an organization of components that define and regulate the collection, storage, management and use of data within a database environment.
a) database system
b) transaction
c) management system
d) structured data
a) database system
Within the database environment, a data model represents data structures with the purpose of supporting a specific problem domain.
A) True
B) False
A) True
In an SQL-based relational database, rows in different tables are related based on common values in common attributes.
A) True
B) False
A) True
_____ data exist in a format that does not lend itself to processing that yields information.
A) Unstructured
B) Historical
C) Structured
D) Semistructured
A) Unstructured
The relational data model was developed in the _____.
a) 1990s
b) 1970s
c) 1980s
d) 1960s
b) 1970s
Which of the following is true of NoSQL databases?
a) They are geared toward transaction consistency rather than performance.
b) They do not support distributed database architectures.
c) They do not support very large amounts of sparse data.
d) They are not based on the relational model.
d) They are not based on the relational model.