Exam 4: Data Modeling and the Entity Relationship Model
Exam 1: Getting Started76 Questions
Exam 2: The Relational Model87 Questions
Exam 3: Structured Query Language96 Questions
Exam 4: Data Modeling and the Entity Relationship Model76 Questions
Exam 5: Database Design81 Questions
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Exam 8: Big Data Data Warehouses and Business Intelligence Systems99 Questions
Exam 9: Getting Started With Microsoft Sql Server 2014 Express Edition40 Questions
Exam 10: Getting Started With Oracle Database Express Edition 11g Release 243 Questions
Exam 11: Getting Started With Mysql 5.6 Community Server71 Questions
Exam 12: Sql Views SQL/PSM and Importing Data70 Questions
Exam 13: Getting Started in Systems Analysis and Design47 Questions
Exam 14: Getting Started With Microsoft Visio 201334 Questions
Exam 15: the Access Workbench section H Microsoft Access 2013 Switchboards17 Questions
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Unified Modeling Language (UML)has quickly replaced the E-R Model as the most popular technique for creating data models.
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(True/False)
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False
Describe the use of Microsoft Access as a prototyping tool.
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Prototyping a database allows users to validate the data model by demonstrating the consequences of data modeling decisions.Microsoft Access is a good tool to build prototype databases because of its ease of use.Microsoft Access database files can be easily copied to create multiple copies of a database,which allows a variety of data models to be created.Further,Microsoft Access wizards allow easy mock-ups of forms and reports for prototyping.Therefore,Microsoft Access is often used to build prototype databases regardless of whether or not Access itself will be the final DBMS.
Whether or not an instance of one entity class must participate in a relationship with another entity class is indicated by the:
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C
In crow's foot style E-R diagrams,an entity class is represented by a(n)________.
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Which of the following activities is not performed during the implementation phase of developing a database system?
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The E-R Model assumes that all instances of a given entity class have the same attributes.
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In crow's foot style E-R diagrams,a circle across the relationship line near an entity indicates:
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Microsoft Access is a good tool for creating mock-ups of forms and reports because:
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The number of entity classes involved in a relationship is the cardinality of the relationship.
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In crow's foot E-R notation,a circle indicates a minimum cardinality of zero.
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A(n)________ is a working demonstration of selected portions of the future system.
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Which of the following would not be contained in a use case?
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System requirements as documented by use cases,business rules,forms,reports,and queries are sufficient to design the database without using a formal data model.
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Microsoft Access 2013 can be used to build a prototype database,which allows users to validate the data model by demonstrating the consequences of data modeling decisions.
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Microsoft Access 2013 is only used to prototype databases where Microsoft Access itself will be the final DBMS.
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When developing a database system,the database is constructed during the implementation phase.
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