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WGU D 426 INTRODUCTION TO DATA BASE EXAM LATEST
VERSION -2025/2026- 100+ QUESTIONS AND VERIFIED
ANSWERS ALL THE BEST
Query Processor (Database Systems)
interprets queries, creates a plan to modify the database or retrieve data, and
returns query results to the application
The query processor performs... (Database Systems)
query optimization to ensure the most efficient instructions are executed on the
data.
storage manager (Database Systems)
translates the query processor instructions into low-level file system commands
that modify or retrieve data.
indexes (Database Systems)
Database sizes range from megabytes to many terabytes, so the storage manager
uses indexes to quickly locate data.
transaction manager (Database Systems)
The transaction manager ensures efficient transaction execution, prevents
conflicts between concurrent transactions, and restores the database to a
consistent state in case of a transaction or system failure.
Metadata (Database Systems)
is data about the database, such as column names and the number of rows in
each table.
relational database
stores data in tables, columns, and rows, similar to a spreadsheet.
WGU D 426 INTRODUCTION TO DATA BASE EXAM LATEST
VERSION -2025/2026- 100+ QUESTIONS AND VERIFIED
ANSWERS ALL THE BEST
Query Processor (Database Systems)
interprets queries, creates a plan to modify the database or retrieve data, and
returns query results to the application
The query processor performs... (Database Systems)
query optimization to ensure the most efficient instructions are executed on the
data.
storage manager (Database Systems)
translates the query processor instructions into low-level file system commands
that modify or retrieve data.
indexes (Database Systems)
Database sizes range from megabytes to many terabytes, so the storage manager
uses indexes to quickly locate data.
transaction manager (Database Systems)
The transaction manager ensures efficient transaction execution, prevents
conflicts between concurrent transactions, and restores the database to a
consistent state in case of a transaction or system failure.
Metadata (Database Systems)
is data about the database, such as column names and the number of rows in
each table.
relational database
stores data in tables, columns, and rows, similar to a spreadsheet.
