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Exam (elaborations)

INSY 3304 CH 3 Questions & Answers Verified 100% Correct!!

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  • INSY 3304
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  • INSY 3304

The ________ can be described as a detailed system data dictionary that describes all objects within the database, including data about table names, the table's creator and creation date, the number of columns in each table, the data type corresponding to each column, index filenames, index crea...

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  • October 11, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • INSY 3304
  • INSY 3304
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PatrickKaylian
INSY 3304 CH 3
The ________ can be described as a detailed system data dictionary that describes all
objects within the database, including data about table names, the table's creator and
creation date, the number of columns in each table, the data type corresponding to each
column, index filenames, index creators, authorized users, and access privileges. -
✔️✔️system catalog

________ are especially useful when you are trying to determine what values in related
tables cause referential integrity problems. - ✔️✔️outer joins

If a foreign key contains either matching values or nulls, the tables that make use of
such a foreign key are said to exhibit ________ integrity. - ✔️✔️Referential

The use of a(n) ________ relationship ensures that two entity sets are not placed in the
same table when they should not be. - ✔️✔️1 : 1

A relational operator that yields all rows in one table that are not found in the other table
is the ________ operator. - ✔️✔️difference

No invoice can have a duplicate number, nor can it be null. This is an example of
________. - ✔️✔️entity integrity

A(n) ________ links tables by selecting only the rows with common values in their
common attribute. - ✔️✔️natural join

The one-to-many (1:M) relationship is easily implemented in the relational model by
putting the primary key of the "1" side in the table of the "many" side as a ________
key. - ✔️✔️foreign


________ data is also known as string data. - ✔️✔️Character

A(n) ________ links tables on the basis of an equality condition that compares specified
columns of each table. - ✔️✔️equijoin

Within a table, the primary key must be unique so that it will identify each row. When
this is the case, the table is said to exhibit ________ integrity. - ✔️✔️entity

A ________ key's effectiveness in narrowing down a search depends on how restrictive
it is. - ✔️✔️secondary

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