Given the Schema shown below Write the query using both relational algebra and SQL that show the Total trip expenses for a salesman named john smith and explain how the queries work step by step Table 1 Schema Entities Attributes Salesperson ssn (pk), s name, start year, dept name Trip tripid (pk), ssn (fk), from city, to city, depart date, return date Expense tripid (fk), account (fk), amount Account account (pk), account name, chart

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Question: Given the Schema shown below: Write the query using both relational algebra and SQL that show the Total trip expenses for a salesman named john

Given the Schema shown below: Write the query using both relational algebra and SQL that show the Total trip expenses for a salesman named john smith" and explain how the queries work step by step

Table 1: Schema

Entities	Attributes
Salesperson	ssn#(pk), s_name, start_year, dept_name
Trip	tripid# (pk), ssn#(fk), from_city, to_city, depart_date, return_date
Expense	tripid# (fk), account# (fk), amount
Account	account#(pk), account_name, chart

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