Data Management - Foundations - D426 WGU Questions and Correct Answers the Latest Update
3 views 0 purchase
Course
Data Management
Institution
Data Management
Data
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
Most common before computers. Audio was recorded as vibrations impressed on
vinyl disks.
Digital Data
Most common today. Encoded...
✓ Specialized programming language designed specifically for database systems. Reads
and writes data efficiently.
Database Application
✓ Software that HELPS business users interact with database systems.
Database Administrator
✓ 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
✓ 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
✓ What role am I?
✓
✓ Develop programs that utilize a database and write applications that combine query
languages and general purpose programming language.
✓ What role am I?
✓
✓ A consumer of data in a database. They request, update, or use stored data to
generate reports or information.
Transaction
✓ A group of queries that MUST be completed or rejected as a whole.
Architecture
✓ Describes the internal components AND the relationships between components.
Query Processor
✓ 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
✓ Ensures efficient instructions are executed on the data from the Query Processor.
Storage Manager
✓ Translates the query processor instructions into low-level file-system commands that
modify OR retrieve data. Uses indexes to quickly locate data.
Transaction Manager
✓ Ensures transactions are properly executed. Prevents conflicts between concurrent
transactions. Also restores the database to a consistent state in the event of a
failure.
Log
Examify | Smart Grades | Latest update
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Examstudy. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.69. You're not tied to anything after your purchase.
