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WGU DATA MANAGEMENT-FOUNDATIONS-D426 EXAM LATEST 2024/2025 WITH ACTUAL QUESTIONS AND CORRECT VERIFIED (DETAILED) ANSWERS/ALREADY GRADED A+$24.99
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WGU DATA MANAGEMENT-FOUNDATIONS-D426
EXAM LATEST 2024/2025 WITH ACTUAL QUESTIONS
AND CORRECT VERIFIED (DETAILED)
ANSWERS/ALREADY GRADED A+
Database System (DBMS) - ANSWER-Software that reads and writes in a
database.
Query - ANSWER-A request to retrieve or change data in a database. Typically
inserts new data, retrieves data, updates, data, or deletes data from a
database.
Query Language - ANSWER-Specialized programming language designed
specifically for database systems. Reads and writes data efficiently.
Database Application - ANSWER-Software that HELPS business users interact
with database systems.
Database Administrator - ANSWER-What role am I?
Responsible for securing the database system against unauthorized users. They
enforce procedures for user access and database system availability.
,Database Designer - ANSWER-What role am I?
Determines the format of each data element AND the overall database
STRUCTURE. Must balance priorities like including storage, response time, and
support for rules that govern the data.
Database Programmer - ANSWER-What role am I?
Develop programs that utilize a database and write applications that combine
query languages and general purpose programming language.
Database User - ANSWER-What role am I?
A consumer of data in a database. They request, update, or use stored data to
generate reports or information.
Transaction - ANSWER-A group of queries that MUST be completed or rejected
as a whole.
Architecture - ANSWER-Describes the internal components AND the
relationships between components.
Query Processor - ANSWER-Interprets queries, creates a plan to modify the
database or retrieve the data, and returns query results to the application.
Performs query optimization.
Query Optimization - ANSWER-Ensures efficient instructions are executed on
the data from the Query Processor.
, Storage Manager - ANSWER-Translates the query processor instructions into
low-level file-system commands that modify OR retrieve data. Uses indexes to
quickly locate data.
Transaction Manager - ANSWER-Ensures transactions are properly executed.
Prevents conflicts between concurrent transactions. Also restores the database
to a consistent state in the event of a failure.
Data - ANSWER-Numeric, textual, visual, or audio information that describes
real-world systems. It is collected and processed to aid in a variety of tasks.
Analog Data - ANSWER-Most common before computers. Audio was recorded
as vibrations impressed on vinyl disks.
Digital Data - ANSWER-Most common today. Encoded as 0s and 1s on
electronic magnetic data.
Database - ANSWER-A collection of data in structured format. In principle, can
be stored on paper or even clay tablets.
Log - ANSWER-A file containing a complete record of ALL inserts, updates, and
deletes processed by the database. The records can be used to restore a
database.
Catalog/Data Dictionary/Repository - ANSWER-A directory of tables, columns,
indexes, and other database objects.
Relational Database - ANSWER-Stores data in tables, columns, and rows,
SIMILAR to a spreadsheet. It also supports SQL. Made up of relations.
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