Test
Data Storage
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Preguntas del test (11)
1The hierarchical database model is based on a ____.
- Atree structure
- Black of a parent segment
- Clack of a child segment
- Dmatrix
2Database models can be grouped into two categories: conceptual models and ____ models
- Aimplementation
- Blogical
- Cphysical
- Dquery
3A(n) ____ model is independent of both hardware and software.
- Aconceptual
- Bexternal
- Cdevelopmental
- Dlogical
4Which model represents the end user’s view of the database?
- AInternal
- BConceptual
- CPhysical
- DExternal
5What type of relationship is expressed with the phrase “Employee manages Store”?
- A1:M
- B1:1
- CM:1
- DM:N
6The key's role is based on a concept known as ____.
- Aconsistency
- Bavailability
- Cdetermination
- Duniqueness
7The ERD is used to graphically represent the ____ database model.
- Acondensed
- Bphysical
- Clogical
- Dconceptual
8A ____ relationship exists when an association is maintained within a single entity.
- Aunary
- Bternery
- Cbinary
- Dweak
9A ____ relationship exists when two entities are associated.
- Aunary
- Bbinary
- Cternary
- Dweak
10The extended entity relationship model (EERM) is sometimes referred to as the ____.
- Aentity relationship model
- Benhanced entity relationship model
- Centity clustering relationship model
- Dextended entity relationship diagram
11The property of ____ enables an entity subtype to inherit the attributes and relationships of the supertype.
- Asubtype discriminator
- Binheritance
- Cspecialization hierarchy
- Dentity supertype
Información
- Descripción
- Data Storage
- Autor
- Brandon Gagon
- Idioma
- English
- Visitas
- 9
- Historial
- Creado el 26 may 2018 · actualizado el 26 may 2018
- Valoración
- Aún sin valoraciones Valora este test