Exam 22: the Semantic Object Model
Exam 1: Introduction100 Questions
Exam 2: Introduction to Structured Query Language SQL100 Questions
Exam 3: The Relational Model and Normalization100 Questions
Exam 4: Database Design Using Normalization100 Questions
Exam 5: Data Modeling With the Entity-Relationship Model100 Questions
Exam 6: Transforming Data Models Into Database Designs103 Questions
Exam 7: SQL for Database Construction and Application Processing105 Questions
Exam 8: Database Redesign101 Questions
Exam 9: Managing Multiuser Databases102 Questions
Exam 10: Managing Databases With SQL Server 2008 R2100 Questions
Exam 11: Managing Databases With Oracle Database 11g100 Questions
Exam 12: Managing Databases With MySQL 55100 Questions
Exam 13: The Web Server Environment110 Questions
Exam 14: Database Processing With XML100 Questions
Exam 15: Database Processing for Business Intelligence Systems101 Questions
Exam 16: Microsoft Access 201048 Questions
Exam 17: Getting Started With Systems Analysis and Design35 Questions
Exam 18: E-R Diagrams and the Idef1x Standard35 Questions
Exam 19: E-R Diagrams and the UML Standard36 Questions
Exam 20: Getting Started With MySQL Workbench Data Modeling Tools37 Questions
Exam 21: Getting Started With Microsoft Visio 201036 Questions
Exam 22: the Semantic Object Model35 Questions
Exam 23: Data Structures for Database Processing35 Questions
Exam 24: Getting Started With Web Servers php and the Eclipse PDT35 Questions
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Group attributes are composites of other attributes.
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True
A "composite object" cannot contain more than one multivalued attribute.
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False
Describe the two ways that semantic object views can be used.
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A semantic view can be used: (1)during database design to reverse-engineer a data model,since the view an application has of an object is represented in the reports,forms and queries of that application,and (2)once the database structure has been created,views can be used to develop new forms and reports from the existing database.
Explain the differences between the E-R model and the semantic object model.
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The key of an attribute is a description of an attribute's possible values.
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Explain the concept of semantic objects as being a "sufficient description."
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An association object relates two (or more)objects and stores data that are peculiar to that relationship.
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A hybrid object is a semantic object that contains at least one:
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The cardinalities of an attribute operate only between the attribute and the container of the attribute.
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An object identifier is one or more attributes that the users employ to identify object instances.
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