Question: would it make sense not to use a database Consider the following schema: Suppliers Database Suppliers(sid: integer, sname: string, address: string) Parts(pid: integer, pname: string,

would it make sense not to use a database Consider the

would it make sense not to use a database Consider the following schema: Suppliers Database Suppliers(sid: integer, sname: string, address: string) Parts(pid: integer, pname: string, color: string) 1b Catalog(sid: integer, pid: integer, cost: real) Write the following queries in relational algebra: i. Find the names of suppliers who supply some red part. ii. Find the sids of suppliers who supply some red part or are at 221 Packer Ave Find the pids of parts that are supplied by at least two different suppliers

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!

SUPPLIERS (SID : integer, SNAME: string, CITY: string) PARTS (PID : integer, PNAME: string, COLOR: string) CATALOG (SID: integer, PID: integer, COST: real) The key fields are underlined, and 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:...

3. [20] Consider the above relations with airline flight information. Note that the Employees relation describes pilots and other kinds of employees as well; every pilot is certified for some...

Please help me complete this in written relational Algebra Suppliers (sid: integer, sname: string, address: 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:...

*** SQL Databases. Please be concise and show full explanation. Please help. Show your own work. Has to run on Oracle SQL Developer. *** (a) Find the sids of suppliers who charge more for some part...

EXERCISE 1 (SQL Queries) Consider the following schema: SUPPLIERS (SID : integer, SNAME : string, CITY : string) PARTS (PID : integer, PNAME : string, COLOR : string) CATALOG (SID : integer, PID :...

Galactic Inc. manufactures flying drone toys. Sales units for January, February, March, April and May were 420, 400, 472, 432, and 500 respectively. Each unit requires 3 direct labor hours and...

Two major cities are connected by a three-lane highway in each direction. Let E1, E2, and E3 denote the right-hand, center, and left-hand lanes, respectively. Upon inspection, the maintenance...

Firms whose revenue is more sensitive to exchange rates than their expenses are most concerned that their home currency will appreciate against foreign currencies. True

4. (LO 5-2, LO 5-3, LO 5-4, LO 5-5, LO 5-6) Match the type of data analytics statistical function used in Excel's Data Analysis Toolpak to its function. Data Analytics Statistical Function...

KEY QUESTION Suppose in Fiscalville there is no tax on the first $10,000 of income, but a 20 percent tax on earnings between $10,000 and $20,000 and a 30 percent tax on income between $20,000 and...

KEY QUESTION What effect will each of the following have on the supply of auto tires? a. A technological advance in the methods of producing tires. b. A decline in the number of firms in the tire...

KEY QUESTION Assume that a business firm finds that its profit is greatest when it produces $40 worth of product A. Suppose also that each of the three techniques shown in the table below will...