Tree Traversal: Traversal is a process of visiting the nodes that are present in the tree that are connected via edges. A node that is present in the tree cannot be visited randomly; it requires traversal techniques that are listed below:

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Chapter 21.2, Problem 21.7CP

Program Plan Intro

Tree Traversal:

Traversal is a process of visiting the nodes that are present in the tree that are connected via edges. A node that is present in the tree cannot be visited randomly; it requires traversal techniques that are listed below:

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Consider the following relational schema. An employee can work in more than one department; the pct_time field of the Works relation shows the percentage of time that a given employee works in a given department. Emp(eid: integer, ename: string, age: integer, salary: real) Works(eid: integer, did: integer, pct_time: integer) Dept(did: integer, budget: real, managerid: integer) Write the following queries in SQL: a. Print the name of each employee whose salary exceeds the budget of all of the departments that he or she works in. b. Find the enames of managers who manage only departments with budgets larger than $1 million, but at least one department with budget less than $5 million.