WGU D426 (D426) (D426)

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...

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...

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? ...

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: % ...