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BCIS 4610 Question and answers rated A+ 2024

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BCIS 4610 Question and answers rated A+ 2024 BCIS 4610: Final Exam Normalization - correct answer The process of converting complex data structures into simple, stable data structures The result of normalization is that every ________ key attribute depends upon the whole primary key. - cor...

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  • September 4, 2024
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BCIS 4610: Final Exam
Normalization - correct answer ✔The process of converting complex data
structures into simple, stable data structures


The result of normalization is that every ________ key attribute depends upon
the whole primary key. - correct answer ✔non-primary key


Four key steps in logical database modeling and design: - correct answer ✔-
Develop a logical data model for each known user interface for the application
using normalization principles.


-Combine normalized data requirements from all user interfaces into one
consolidated logical database model (view integration).


-Translate the conceptual E-R data model for the application into normalized
data requirements.


-Compare the consolidated logical database design with the translated E-R
model and produce one final logical database model for the application.


Relational Database Model - correct answer ✔data represented as a set of
related tables or relations


Relation - correct answer ✔a named, two-dimensional table of data; each
relation consists of a set of named columns and an arbitrary number of
unnamed rows

, Relations have several properties that distinguish them from
nonrelationaltables: - correct answer ✔-Entries in cells are simple.


-Entries in columns are from the same set of values.


-Each row is unique.


-The sequence of columns can be interchanged without changing the
meaning or use of the relation.


-The rows may be interchanged or stored in any sequence.


Key physical database design decisions include: - correct answer ✔-
Choosing a storage format for each attribute from the logical database model.


-Grouping attributes from the logical database model into physical records.


-Arranging related records in secondary memory (hard disks and magnetic
tapes) so that records can be stored, retrieved and updated rapidly.


-Selecting media and structures for storing data to make access more
efficient.


Deliverables and Outcomes - correct answer ✔•Logical database design
-Must account for every data element on a system input or output
-Normalized relations are the primary deliverable.

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