WGU - D426 Data Management Objective
Assessment
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Practice questions for this set
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A descriptive property of an entity.
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1 Database Application 2 SQL Statements
3 Attribute 4 Query Processor
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Terms in this set (151)
, Database Application Software that helps business users interact with
database systems.
Database Administrator Responsible for securing the database system
against unauthorized users. A database
administrator enforces procedures for user access
and database system availability.
Authorization Many database users should have limited access to
specific tables, columns, or rows of a database.
Database systems authorize individual users to
access specific data.
Rules Database systems ensure data is consistent with
structural and business rules.
Query Processor Interprets queries, creates a plan to modify the
database or retrieve data, and returns query results
to the application. Performs query optimization to
ensure the most efficient instructions are executed
on the data.
Storage Manager Translates the query processor instructions into
low-level file-system commands that modify or
retrieve data. Database sizes range from
megabytes to many terabytes, so the storage
manager uses indexes to quickly locate data.
Transaction Manager Ensures transactions are properly executed. The
transaction manager prevents conflicts between
concurrent transactions. The transaction manager
also restores the database to a consistent state in
the event of a transaction or system failure.
Assessment
Save
Practice questions for this set
Learn 1/7 Study using Learn
A descriptive property of an entity.
Choose an answer
1 Database Application 2 SQL Statements
3 Attribute 4 Query Processor
Don't know?
Terms in this set (151)
, Database Application Software that helps business users interact with
database systems.
Database Administrator Responsible for securing the database system
against unauthorized users. A database
administrator enforces procedures for user access
and database system availability.
Authorization Many database users should have limited access to
specific tables, columns, or rows of a database.
Database systems authorize individual users to
access specific data.
Rules Database systems ensure data is consistent with
structural and business rules.
Query Processor Interprets queries, creates a plan to modify the
database or retrieve data, and returns query results
to the application. Performs query optimization to
ensure the most efficient instructions are executed
on the data.
Storage Manager Translates the query processor instructions into
low-level file-system commands that modify or
retrieve data. Database sizes range from
megabytes to many terabytes, so the storage
manager uses indexes to quickly locate data.
Transaction Manager Ensures transactions are properly executed. The
transaction manager prevents conflicts between
concurrent transactions. The transaction manager
also restores the database to a consistent state in
the event of a transaction or system failure.
