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Data Management - Foundations - D426 WGU questions fully solved & updated 2025.
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Data Management - Foundations - D426 WGU questions fully solved & updated 2025.
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Data Management -Foundations - D426 WGU
questions fully solved &
updated 2025
Data - answer numeric , textual , visual or audio
information that describes real-world systems.
varies in ways such as scope, format, access.
analog data - answer Historically most common
before computers, encoded as continuous
variations on various physical media.
digital data - answer most common today,
recorded as 0's and 1's on electronic and magnetic
media.
database designer - answer determines the
format of each data element and the overall
database structure
database user - answer a consumer of data in a
database. can either use an application or submit
queries directly to the database. they use, request
and update data. to generate reports
,transaction - answer a group of queries that must
be completed or rejected as whole. will result in
incomplete or incorrect data if not terminated as a
whole.
Query processor - answer interprets queries,
creates a plan to modify the database or retrieve
data, and returns query results to the application.
Query optimization - answer to ensure the most
efficient instructions are executed on the data
from the processor.
Storage Manager - answer translates the query
processor instructions into low-level file-system
commands that modify or retrieve data.
indexes - answer used by the storage manager to
quickly locate data
catalog - answer also called a data dictionary , a
directory of tables, columns and indexes as well as
other database objects.
, relational database - answer a database that
stores data in tables that consist of rows and
columns, similar to a spreadsheet
SQL - answer Structured Query Language
NoSQL - answer A new generation of database
management systems that is not based on the
traditional relational database model.
query - answer command for a database that
typically inserts, retrieves, updates and deletes
data from the database.
crud - answer Create, Read, Update, Delete
statement - answer a database command such as
a query that inserts , selects updates and deletes
data
SELECT - answer Retrieves data from a table
UPDATE - answer modifies data in a table
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