WGU D426 (D426) (D426)
Western Governors University
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WGU D426 Data Management Foundations Final Exam (Latest 2023/ 2023 Update) | Questions and Verified Answers|100% Correct| Grade A
- Exam (elaborations) • 36 pages • 2023
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WGU D426 Data Management Foundations Final Exam (Latest 2023/ 2023 Update) | Questions and Verified Answers|100% Correct| Grade A 
 
Q: Architecture 
 
 
Answer: 
Describes the internal components AND the relationships between components. 
 
 
 
Q: 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. 
 
 
 
Q: Query Optimization 
 
 
Answer: 
Ensures efficient instr...
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WGU D426 Data Management Foundations Exam (Latest 2023/ 2023 Update) | Questions and Verified Answers|100% Correct| Grade A
- Exam (elaborations) • 44 pages • 2023
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WGU D426 Data Management Foundations Exam (Latest 2023/ 2023 Update) | Questions and Verified Answers|100% Correct| Grade A 
Q: The data about the data. Describes elements such as columns, names, and data type. 
 
Answer: 
 Metadata 
 
 
Q: Ordered collection of elements in parentheses. 
 
Answer: 
 Tuple 
 
 
Q: % of table rows selected by a query 
 
Answer: 
 Hit Ration 
 
 
Q: Reads blocks directly, without accessing an index. 
 
Answer: 
 Table Scan 
 
 
Q: Reads index blocks sequentially in...
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WGU D426 (Latest 2023/ 2023 Update) Data Management Foundations Exam| Guide with Questions and Verified Answers|100% Correct| Grade A
- Exam (elaborations) • 59 pages • 2023
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WGU D426 (Latest 2023/ 2023 Update) Data Management Foundations Exam| Guide with Questions and Verified Answers|100% Correct| Grade A 
 
Q: What does SQL stand for? 
 
 
Answer: 
 Structured Query Language. 
 
 
 
Q: What can SQL statements do? 
 
 
Answer: 
 Read and write data, create and delete tables, and administer the database system. 
 
 
 
Q: What is big data? 
 
 
Answer: 
 Massive volumes of online data, often with poorly structured or missing information. 
 
 
 
Q: What is NoSQL? 
 
 ...
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WGU D426 Pre- Assessment (Latest 2023/ 2023 Update) Data Management Foundations Exam| Questions and Verified Answers|100% Correct| Grade A
- Exam (elaborations) • 12 pages • 2023
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WGU D426 Pre- Assessment (Latest 2023/ 2023 Update) Data Management Foundations Exam| Questions and Verified Answers|100% Correct| Grade A 
 
Q: What is another name for a subquery? 
 
 
Answer: 
Nested query 
 
 
 
Q: Which operator is used to compare against a list of values when determining a match in a WHERE clause? 
 
 
Answer: 
IN 
 
 
 
Q: Which wildcard character is used to represent zero or more characters when searching for a specified pattern using a LIKE operator? 
 
 
Answer: 
% 
 
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