9636745
Descripción
Test por Hawerth Castro, actualizado hace más de 1 año
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Creado por Hawerth Castro
hace más de 7 años
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Pregunta 1
Pregunta
What do you call the elimination of redundant data?
Respuesta
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normalization
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de-duplication
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loopbacking
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reduxing
Pregunta 2
Pregunta
Which of the following indicates the elimination of repeating groups?
Respuesta
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1NF
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2NF
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3NF
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4NF
Pregunta 3
Pregunta
Which of the following indicates the elimination of redundant data?
Respuesta
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1NF
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2NF
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3NF
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4NF
Pregunta 4
Pregunta
Which of the following is not a condition for 1NF?
Respuesta
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Table must have no duplicate records.
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The table must have no multi-valued attributes.
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There are no primary keys.
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Entries in the column are of the same data type.
Pregunta 5
Pregunta
What would enable you to enforce the uniqueness property of columns, other than a primary key within a table?
Respuesta
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secondary key
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constant check
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validator
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unique constraint key
Pregunta 6
Pregunta
What is an attribute or set of attributes that can be used to uniquely identify the row?
Respuesta
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primary key
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second key
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unique constraint key
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foreign key
Pregunta 7
Pregunta
What key is replicated from the primary key of one table to a secondary table, and then all the key attributes get duplicated from the primary table?
Respuesta
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primary key
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second key
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unique constraint key
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foreign key
Pregunta 8
Pregunta
What type of index sorts the data stored inside the table?
Respuesta
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clustered index
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non-clustered index
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quick index
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primary index
Pregunta 9
Pregunta
What type of index has an index key value that points to a data row, which contains the key value?
Respuesta
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clustered index
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nonclustered index
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quick index
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primary index
Pregunta 10
Pregunta
What type of field would you make an employee ID?
Respuesta
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standard key
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foreign key
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unique constraint key
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secondary key
Pregunta 11
Pregunta
If you define a primary key, which of the following levels have you reached?
Respuesta
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1NF
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2NF
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3NF
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4NF
Pregunta 12
Pregunta
Which level eliminates columns not dependent on keys?
Respuesta
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1NF
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2NF
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3NF
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4NF
Pregunta 13
Pregunta
Which level of is reached by using primary keys on a table within a SQL Server database?
Respuesta
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1NF
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2NF
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3NF
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4NF
Pregunta 14
Pregunta
What structures are used when storing keys for a clustered index?
Respuesta
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root tree
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reverse root tree
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B-tree
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alphabetical
Pregunta 15
Pregunta
Which type of index uses pointers that point to row location?
Respuesta
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clustered index
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nonclustered index
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quick index
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primary index
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