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WEEK 3 APT 1050

Denis Ndungu 12 preguntas

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Preguntas del test (12)

  1. 1Define database design?
    its the [blank_start]organization[blank_end] of data [blank_start]according to[blank_end] a database [blank_start]model[blank_end]
    1. Aorganization
    2. Baccording to
    3. Cmodel
  2. 2what is data modeling?
    Data modeling is the process of [blank_start]documenting[blank_end] a complex [blank_start]software system[blank_end] design as an easily understood [blank_start]diagram[blank_end], using text and symbols to represent the way data needs to [blank_start]flow[blank_end]
    1. Adocumenting
    2. Bsoftware system
    3. Cdiagram
    4. Dflow
  3. 3what is conceptual database design?
    The process of [blank_start]constructing[blank_end] a [blank_start]model[blank_end] of the data used in an enterprise. [blank_start]independent[blank_end] of all [blank_start]physical[blank_end] considerations.
    1. Aconstructing
    2. Bmodel
    3. Cindependent
    4. Dphysical
  4. 4what is logical database design?
    process of constructing a model of the data used based on a [blank_start]specific data model[blank_end] (e.g. relational), but [blank_start]independent[blank_end] of a [blank_start]particular DBMS[blank_end] product and other physical considerations
    1. Aspecific data model
    2. Bindependent
    3. Cparticular DBMS
  5. 5What is physical database design?
    the process of producing a description of he [blank_start]database[blank_end] [blank_start]implementation[blank_end] on [blank_start]secondary storage[blank_end]
    1. Adatabase
    2. Bimplementation
    3. Csecondary storage
  6. 6What is an entity-relationship model?
    a [blank_start]logical represenation[blank_end] of the data for an organization or for a business area,using [blank_start]entities[blank_end] for categories of data and [blank_start]relationchips[blank_end] for [blank_start]assocciations[blank_end] between entities
    1. Alogical represenation
    2. Bentities
    3. Crelationchips
    4. Dassocciations
  7. 7What is an entity relationship diagram?
    a [blank_start]graphical[blank_end] represenation of an [blank_start]entity-relationship[blank_end] diagram
    1. Agraphical
    2. Bentity-relationship
  8. 8List the threekey elements in E-RD
    [blank_start]Entities[blank_end]: objects or items of interest
    [blank_start]Attributes[blank_end]: facts about or properties of an entity
    [blank_start]Relationships[blank_end]: links between entities
    1. AEntities
    2. BAttributes
    3. Cassociations
    4. DRelationships
  9. 9Define an entity type
    a group of [blank_start]bjects[blank_end] with [blank_start]same properties[blank_end], identified by an enterprise as having an [blank_start]independent existence[blank_end]
    1. Abjects
    2. Bsame properties
    3. Cindependent existence
  10. 10Differentiate the following terms: entity instance and entity type

    [blank_start]Entity instance[blank_end]-person, place, object , event, concept(often corresponds to a row in a table)
    [blank_start]Entity type[blank_end]-collection of entities(often corresponds to a table)
    1. AEntity instance
    2. BEntity type

Información

Descripción
Modeling Data in the Organization
Idioma
English
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apt 1050quiz
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