Columns used for joining tables in SQL statements can have either the same or different names

SELECT, PROJECT, and RENAME are binary relational operations.

A row is SQL is equivalent to a relational model’s:

Which one of these SQL statements is correct and will execute?

Majority of modern DBMS today automatically create indexing on PK field

Which normal form adds the requirement that every non-key attribute must be fully dependent on the key?

A relation in BCNF is always in 4NF and 5 NF.

A table is in Boyce Codd Normal Form when if at least one determinant is a candidate key.

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Theme parks traditionally face severe capacity bottlenecks at popular attractions, leading to long physical queues that increase guest frustration and reduce revenue spent in adjacent retail/dining outlets. Disney addressed this by implementing mobile app-based Virtual Queues, allowing guests to secure a boarding group digitally while freely roaming the park. Part A: Analyze how Disney’s Virtual Queue alters Maister’s “Perception – Expectation” satisfaction formula (S = P – E). (4 pts) Part B: Detail the economic dual-benefit achieved by replacing physical queues with virtual holding environments. (3 pts) Part C: From an operations perspective, explain how virtual queues manage customer flow without physically adding ride hardware capacity. (3 pts)