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AIS ACG 4401 Exam 2 Questions & Answers 2024/2025
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AIS ACG 4401 Exam 2 Questions & Answers 2024/2025 Conceptual model - ANSWERSdepicts important objects and relationships between objects that must be captured in a database. REA Communication methods - ANSWERS1. Narrative Description 2. Diagrams with various notations 3. Structured Grammar...

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  • August 10, 2024
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  • 2024/2025
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AIS ACG 4401 Exam 2 Questions &
Answers 2024/2025

Conceptual model - ANSWERSdepicts important objects and relationships between objects that must be
captured in a database.



REA Communication methods - ANSWERS1. Narrative Description

2. Diagrams with various notations

3. Structured Grammar

4. Predicate logic notation

5. Tags: XML XBRL

6. Programming Language notation



Unified Modeling Language (UML) - ANSWERSA standard format for communicating and documenting
software design.

Uses diagrams for different analysis levels.



Logical Model - ANSWERSShows what a system must do, regardless of how it will be implemented
physically.

independent software, convert conceptual model.



Physical database - ANSWERScreated based on specific database software packages, database is
implemented and dependent on software.



Entity - ANSWERSreal world object with separate existence



Class - ANSWERSentities with shared characteristics



Association - ANSWERSRelationship between classes

, Association Class - ANSWERSrepresents a relationship in which there can be only one link between the
related entities



Reified association - ANSWERSa relationship in which there can be multiple links between the related
entities



Attribute - ANSWERScharacteristic possessed by a class or association



Primary Key Attribute - ANSWERSused to uniquely and universally describe each instance of a class or
association class



Concatenated primary key - ANSWERSa unique and universal identifier for a class or association class
that is made up of multiple attributes



Simple attribute - ANSWERSAn attribute that cannot be subdivided into meaningful components.



composite Attributes - ANSWERScan be divided into smaller subparts, which represent more basic
attributes that have their own meanings



Derivable attribute - ANSWERSa characteristic of a class or an association class that can be calculated
based on the values of other stored characteristics



Static derivable attribute - ANSWERSa derivable attribute for which the derived value will not change if
additional transaction data is entered into the database



volatile derivable attribute - ANSWERSa derivable attribute for which the derived value will change if
additional transaction data is entered into the database



minimum multiplicity - ANSWERSrepresents the minimum number of times an instance of a class must
participate in an association with instances of a related class; legal values are 0 and 1

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