Exam 2: The Relational 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
Exam 6: Database Administration76 Questions
Exam 7: Database Processing Applications82 Questions
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
Exam 16: Getting Started With Web Servers, Php, and the Net beans IDE35 Questions
Exam 17: Business Intelligence Systems98 Questions
Exam 18: Big Data77 Questions
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Given the functional dependency for the attributes of ENTITY1,X → (A,B,C),X is a candidate key for the relation ENTITY1 (A,B,C,X).
(True/False)
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What requirements must a two-dimensional table satisfy in order to be a relation?
(Essay)
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In the relational model,each row of a table contains data that represents an attribute of the entity.
(True/False)
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A table that meets the requirements of a relation is said to be in which normal form?
(Multiple Choice)
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Although Microsoft Access is a personal database,it is still subject to the following modification problem(s):
(Multiple Choice)
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Normalization is the process of removing all functional dependencies from a relation.
(True/False)
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Although Microsoft Access is a personal database,the database tables in Access are still subject to ________ if they are not well-formed.
(Short Answer)
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To create a well-formed relation through normalization,every determinant must be a candidate key.
(True/False)
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Given the relations:
Such that each student is assigned to one advisor,which of the following is true?
(Multiple Choice)
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In the normalization process,it is necessary to identify all the determinants in a relation.
(True/False)
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Since Microsoft Access is a personal database,it is not subject to the modification problems that occur in other relational databases.
(True/False)
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The relationship between two attributes that denotes that if the value of the first attribute is known,then the value of the second attribute can be determined,is called a(n)________.
(Short Answer)
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During the normalization process,the remedy for a relation that is not well formed is to:
(Multiple Choice)
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A rule that requires every value in a foreign key to match values in the corresponding primary key is called a(n)________ constraint.
(Short Answer)
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