What is defined as any data item in a record that is used to identify the record?

A) an attribute
B) a key
C) a primary key
D) an entity


B) a key

Computer Science & Information Technology

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A paragraph-ending line that appears by itself at the top of a page is called a(n) ________

A) endnote B) widow C) footnote D) orphan

Computer Science & Information Technology

Design a multidatabase query plan and a set of SQL statements that implement the query of the previous exercise.

What will be an ideal response?

Computer Science & Information Technology

DES uses which of the following encryption key length?

a. 56 bit b. 128 bit c. 192 bit d. 256 bit

Computer Science & Information Technology

Which of the following statements accurately describes iris recognition?

A. Iris recognition is not secure B. Iris recognition has high FARs C. Iris recognition technology is expensive D. Iris recognition scans the eye with lasers

Computer Science & Information Technology