Question: Section 2: This section covers query optimization (40 points) 1. Using the following schema: Suppliers(sid, sname, address) Parts(pid, pname, color) Catalog(pid, sid, cost, rating) consider

Section 2: This section covers query optimization (40 points) 1. Using

Section 2: This section covers query optimization (40 points) 1. Using the following schema: Suppliers(sid, sname, address) Parts(pid, pname, color) Catalog(pid, sid, cost, rating) consider the following query: SELECT s.sname, c.cost FROM suppliers s, parts p, catalog c WHERE p.pid c.pid AND c.sid s.sid AND s.snameOrion' AND p.colorblack' AND p.pid > 100; a) (10 pts) Draw a query tree using selection, projection and cross product (???). b) (10 pts) Draw a query tree that optimizes the SQL query using pushing selections

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Please answer fully Section 2: This section covers query optimization (40 points). 1. Using the following schema: Suppliers(sid, sname, address) Parts(pid, pname, color) Catalog(pid, sid, cost,...

Section 2: This section covers relational algebra (50 points). (A) Consider the following schema: Suppliers (sid: integer, sname: varchar(20), address: varchar(50)) Parts(pid: integer, pname:...

Database using Relational Algebra Consider the following schema: Supplier (sid, sname, address) Part (pid, pname, color) Cata- log (sid, pid, cost) The primary keys are underlined. The Catalog...

Section 2 This section covers relational algebra (50 points). (A) Consider the following schema: Suppliers(sid: integer, sname: varchar(20), address: varchar(50)) Parts(pid: integer, pname:...

What would I put exactly for parts A) and B)? Thank you in advance. Section 2: This section covers relational algebra (50 points). (A) Consider the following schema: Suppliers(sid: integer, sname:...

POSSIBLE HELPER BELOW: - MAY OR MAY NOT NEED Section 2: This section covers relational algebra (50 points). (A) Consider the following schema: Suppliers(sid: integer, sname: varchar(20), address:...

Hello would it be possible to answer question 1 (a and b) with the drawing please? Thank you if you can. Section 2: This section covers query optimization and hash indexes (50 points) 1. Using the...

Consider the following schema: SUPPLIERS (SID: integer, SNAME: string, STREET: string, CITY: string, ZIP: string) PARTS (PID:integer, PNAME: string, COLOR: string) CATALOG (SID: integer, PID:...

Consider the following schema: SUPPLIERS (SID: integer, SNAME: string, STREET: string, CITY: string, ZIP: string) PARTS (PID: integer, PNAME: string, COLOR: string) CATALOG (SID: integer, PID:...

Two professors teach different sections of the same course. One professor, Dr. Easy, has a reputation for being an easy grader. The other professor, Dr. Hard, has a reputation for being a hard...

What are factors external to the organization that can significantly affect the firms recruitment efforts?

2. Should the source used in such a manufacturing process have a short or a long half-life? Explain your answer. Radioactive sources are used to control thickness in some manufacturing processes.

Mathews and Company has $112,000 in an accrued payroll account. The company's weekly payroll is $186,700 and the accrual represents 3 days out o 5 working days. If the auditor has determined that...

Know when firms should not offer service guarantees.

Be familiar with the seven groups of jaycustomers and understand how to manage them effectively.

Recognize the power of service guarantees.