48 a database is required instead of a spreadsheet when a professionals need to keep 4313009

48 a database is required instead of a spreadsheet when a professionals need to keep 4313009

48) A database is required instead of a spreadsheet when ________.

A) professionals need to keep track of things

B) a user requires control over data

C) lists involve data with multiple themes

D) one or more users want to access the same data

49) Which of the following is the smallest data element in a database?

A) field

B) record

C) byte

D) file

50) In a database, ________ are grouped into columns.

A) fields

B) records

C) bytes

D) files

51) The columns in a database are called ________.

A) records

B) tables

C) files

D) fields

52) The rows in a database are called ________.

A) records

B) tables

C) files

D) fields

53) The tables that appear in a database are known as ________.

A) records

B) files

C) fields

D) attributes

54) Which of the following data elements is placed higher than records in the database hierarchy?

A) file

B) field

C) character

D) byte

55) A primary key used in a database is a ________.

A) group of rows that are formed to identify a unique table or file

B) column or group of columns that identifies a unique row in a table

C) character or byte that represents fields or columns

D) group of tables or files formed to identify a unique field or row

56) Albert creates a relational database to store employee performance statistics. He stores each employee's data in independent rows and creates a column named “Employee Number” to assign unique numbers to each employee. This column is referred to as a(n) ________.

A) primary key

B) identifier

C) foreign key

D) functionally dependent record

57) Columns that are keys to different tables than the ones in which they reside are called ________.

A) attributes

B) foreign keys

C) primary keys

D) internal records

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