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Exam (elaborations)

WGU D426 EXAM 2024/2025 WITH 100% ACCURATE SOLUTIONS

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  • WGU D426
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  • WGU D426

WGU D426 EXAM 2024/2025 WITH 100% ACCURATE SOLUTIONS

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  • October 10, 2024
  • 37
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • WGU D426
  • WGU D426
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YANCHY
WGU D426 EXAM 2024/2025 WITH 100%
ACCURATE SOLUTIONS


Data - Definition - Precise Answer ✔✔Numeric, textual, visual, or audio
information that describes real-world systems


Scope - Data - Precise Answer ✔✔Amount of data produced &
collected can vary


Format - Data - Precise Answer ✔✔Data may be produced as numbers,
text, image, audio, or video


Access - Data - Precise Answer ✔✔Some data sources are private while
others are made publicly available


Analog - Data - Precise Answer ✔✔Encoded as continuous variations
on various physical media


Digital - Data - Precise Answer ✔✔Encoded as 0s & 1s on electronic &
magnetic media


Operational Data - Data - Precise Answer ✔✔Conduct daily business
function

,Analytic Data - Data - Precise Answer ✔✔To understand, manage, and
plan business


Database - Definition - Precise Answer ✔✔Collection of data in a
structures format


Database System (DBMS) - Databases - Precise Answer ✔✔Software
that reads & writes data in a database


In-Memory Database - Database - Precise Answer ✔✔Database that
stores data in main memory, instead of or in addition to storage media


Embedded Database - Database - Precise Answer ✔✔Database that is
packaged with a programming language


Federated Database - Database - Precise Answer ✔✔Collection of 2+
participating databases underneath a coordinating software layer


Autonomous Database - Federated Database - Database - Precise
Answer ✔✔Operates independently of other participating databases


Heterogeneous Databases - Federated Database - Database - Precise
Answer ✔✔Either run under different database systems of have
incompatible schema

,Middleware - Federated Database - Database - Precise Answer
✔✔Software lies between application programs & database software


Global Catalog - Federated Database - Database - Precise Answer
✔✔Directory of participating database objects (tables, columns,
indexesw)


Global Query Processor - Federated Database - Database - Precise
Answer ✔✔Decomposes a federated query into queries for each
participating database


Database Wrapper - Federated Database - Database - Precise Answer
✔✔Converts decomposed queries to the appropriate syntax for each
participating database


Nickname - Federated Database - Database - Precise Answer
✔✔Federated database name for a participating database object (tables
& columns)


User Mapping - Federated Database - Database - Precise Answer
✔✔Associates a federated database user with a participating database
user


Query - Databases - Precise Answer ✔✔Request to retrieve or change
data in a database

, CAP - Database - Precise Answer ✔✔Cannot simultaneously be:
Consistent (conforms to all rules at all times, Available (nodes must
respond to queries at all times), Partition-Tolerant (database functions
when network partition occurs)


Replica - Database - Precise Answer ✔✔Copy of entire database; high
availability, fast concurrent reads, local reads, slow updates


Storage Arrays - Replica - Database - Precise Answer ✔✔Manage
replicas internally without database intervention


Database Application - Databases - Precise Answer ✔✔Software that
helps business users interact with database systems


Performance - File & Database Systems Shared by Many Users - Precise
Answer ✔✔When many users & applications simultaneously access
large databases, query response time degrades rapidly


Authorization - File & Database Systems Shared by Many Users -
Precise Answer ✔✔Many database users should have limited access to
specific tables, columns, or rows of database


Security - File & Database Systems Shared by Many Users - Precise
Answer ✔✔Database systems ensure authorized users only access
permissible data

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