WGU D427 1.5-1.8 questions fully solved & updated 2025

WGU D427 1.5-1.8 questions
fully solved & updated 2025

data type - answer a named set of values from
which column values are drawn.


Integer - answer data type that represents
positive and negative whole numbers.


Decimal - answer data type that represents
numbers with fractional values.


Character - answer data type that represents
textual characters.


Date and time - answer data type that represents
date, time, or both. Some include a time zone or
specify a time interval.


Binary - answer data type that stores data exactly
as the data appears in memory or computer files,
bit for bit.

, Spatial - answer data type that stores geometric
information, such as lines, polygons, and map
coordinates.


Document - answer data type that contains
textual data in a structured format such as XML or
JSON.


signed - answer a number that may be negative.


unsigned - answer A number that cannot be
negative.


operator / operands - answer An operator is a
symbol that computes a value from one or more
other values, called operands: Arithmetic
operators compute numeric values from numeric
operands. Comparison operators compute logical
values TRUE or FALSE. Operands may be numeric,
character, and other data types. Logical operators
compute logical values from logical operands.
in a math equation, operators are the +, -, x, /, etc.
and operands are the numbers.


unary - answer an operator that has one operand.