Exam 5: Database Design 1: Normalization
Exam 1: Introduction to Database Management50 Questions
Exam 2: The Relational Model 1: Introduction, QBE, and Relational Algebra50 Questions
Exam 3: The Relational Model 2: SQL74 Questions
Exam 4: The Relational Model 3: Advanced Topics50 Questions
Exam 5: Database Design 1: Normalization50 Questions
Exam 6: Database Design 2: Design Method75 Questions
Exam 7: Dbms Functions50 Questions
Exam 8: Database Administration50 Questions
Exam 9: Database Management Approaches75 Questions
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Potential problems in the design of a relational database are known as ____.
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(Multiple Choice)
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B
In a table with columns A,B,and C,there is a(n) ____________________ dependence of column B on column A if each value for A is associated with a specific collection of values for B and,further,this collection is independent of any values for C.
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(Short Answer)
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multivalued
Describe the procedure for converting a table to the third normal form.
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First,for each determinant that is not a candidate key,remove from the table the columns that depend on this determinant (but don't remove the determinant). Next,create a new table containing all the columns from the original table that depend on this determinant. Finally,make the determinant the primary key of this new table.
The possibility of data dependence is one of the four categories of update anomalies.
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____ normal form has an additional condition that the only determinants the table contains are candidate keys.
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By converting a given collection of tables to an equivalent third normal form collection of tables,you remove any problems arising from ____________________ dependencies.
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A column B is ____________________ on another column A if each value for A in the database is associated with exactly one value of B.
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If you have different descriptions for the same item,such as part numbers,then you have the update anomaly known as ____________________.
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To convert a table to fourth normal form,split the third normal form table into separate tables,each containing the column that ____ the others.
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The normalization process used to convert a relation or collection of relations to an equivalent collection of third normal form tables is a crucial part of the database design process.
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A table is in first normal form if it does not contain ____.
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A column is a nonkey attribute when it is not part of the primary key.
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Discuss how candidate keys,primary key,and alternate keys are related.
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A(n) ____ is a column or collection of columns on which all columns in the table are functionally dependent.
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A(n) ____________________ uses arrows to indicate all the functional dependencies present in the table.
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