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Chapter 7

Rebecca Escobar 45 preguntas

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Preguntas del test (45)

  1. 1A major advantage of relational databases is:
    1. AAll records are stored together
    2. BNo pointers are used
    3. CThe ability to add tables and relationships after the database becomes operational
    4. DIt closely resembles a flat file
  2. 2In recent years many businesses have formed a common information source within their business organization called a database. One of the advantages of building databases is the simultaneous updating of files with common data elements. Another major advantage of the database concept is that:
    1. ADatabase systems can be used in microcomputers as well as on large computers
    2. BDatabase systems are simple to install and maintain
    3. CDatabase systems are generally less expensive than separate file systems
    4. DMore duplication of data occurs with a database system
    5. EFewer skilled people are required to run a database system than another system
  3. 3Within a database context, the relationship between “natural parent” and “child” would most likely be:
    1. AOne-to-one
    2. BOne-to-many
    3. CMany-to-one
    4. DMany-to-many
  4. 4Within a database context, the relationship between “military officer” and “private” would most likely be:
    1. AOne-to-one
    2. BOne-to-many
    3. CMany-to-one
    4. DMany-to-many
  5. 5Within a database context, the relationship between “students” and “classes” would most likely be:
    1. AOne-to-one
    2. BOne-to-many
    3. CMany-to-one
    4. DMany-to-many
  6. 6Within a database context, the relationship between “assigned parking space” and "car" would most likely be:
    1. AOne-to-one
    2. BOne-to-many
    3. CMany-to-one
    4. DMany-to-many
  7. 7Within a database context, the relationship between “doctor” and “patient” would most likely be:
    1. AOne-to-one
    2. BOne-to-many
    3. CMany-to-one
    4. DMany-to-many
  8. 8This item helps developers document a database:
    1. AData documentation detailer (DDD)
    2. BData dictionary
    3. CDatabase schema system
    4. DData OLAP system
  9. 9An example of a transitive dependency in a database is:
    1. AStudent-> grade
    2. BTelephone area code -> phone number
    3. CAirline -> flight number
    4. DParking Code -> parking fine amount
  10. 10An example of a transitive dependency in a database is:
    1. AStudent -> university course number
    2. BParking ticket code -> total of student parking fines
    3. CProduct number -> product price
    4. DAge -> social security number

Información

Descripción
Test sobre Chapter 7, creado por Rebecca Escobar el 06/11/2016.
Idioma
English
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10
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