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WGU D426 EXAM 2024/2025 WITH 100% ACCURATE SOLUTIONS
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WGU D426 EXAM 2024/2025 WITH 100% ACCURATE SOLUTIONS
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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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