Refer to the sample tables and data below. Tables: people (id(pk), firstname, lastname, zip(fk)) zip_code (zip(pk), city, state) mysql> select * from people; | id | firstname | lastname | zip +-- | McFly Jennifer | Parker Lorraine | McFly Tannen | 1 | Marty | 2 | 45001 33647 33647 33647 | 07005 | 3 | | 4 | Biff | 5 | George | McFly 5 rows in set (0.01 sec) mysql> select from zip_code; | zip | city | state | 45001 New York | NY 07005 New Jersey | NJ FL 33647 Tampa | 33765 | Clearwater | FL 4 rows in set (0.01 sec) How many rows and columns will the result set from the following command have? SELECT zip FROM people UNION ALL SELECT zip FROM zip_code; (a) Number of rows: 4 rows foreign key references zip_code(zip) (b) Number of columns: 1 column How many rows and columns will the result set from the following command have? SELECT zip FROM people UNION SELECT state FROM zip_code; (c) Number of rows: 5 rows (d) Number of columns: 9 columns

Oracle 12c: SQL

3rd Edition

ISBN:9781305251038

Author:Joan Casteel

Publisher:Joan Casteel

Chapter3: Table Creation And Management

Section: Chapter Questions

Problem 2HOA: Create a new table containing these four columns: Emp#, Lastname, Firstname, and Job_class. The...

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SQL CODE FOR For the players who show up in Batting, Bowling, and Fielding tables, create a list that shows their names, runs they have scored, wickets they have taken, and catches they have taken? table is in picture (bowling table is same as batting and fielding )
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CREATE TABLE Users( C_Id varchar(8) NOT NULL, LastName Varchar(255) NOT NULL, FirstName varchar(255) NOT NULL, ema il varchar(255), Phone int, PRIMARY KÉY (C_Id) CREATE TABLE Restaurants( R_Id varchar(255) NOT NULL, Rname varchar(255) NOT NULL, Type varchar(255), Raddress varchar(255), Rphone int, Remail varchar(255), PRIMARY KEY(R_Id) ); CREATE TABLE RDate( T_num int NOT NULL, Bdate DATE, Rdate DATE, T_start varchar(255), E_start varchar(255), PRIMARY KEY(T_num) ); CREATE TABLE Book ingInfo( C_Id varchar(8) NOT NULL, R_Id int NOT NÚLL, PRIMARY KEY(C_Id, R_Id), FOREIGN KEY (C_Ià) REFERENCES Users(C Id), FOREIGN KEY (R_Id) REFERENCES Restaurant(R_Id) ); CREATE TABLE Rating( R_Id varchar(255) NÓT NULL, Rating Id varchar(255) NOT NULL, Rate varchar(255) CHECK (Rate>11), Comment LONG, PRIMARY KEY(Rating Id), FOREIGN KEY (R_Id) REFERENCES Restaurants(R_Id) ); Create 1 procedure Create 1 function Create 1 database trigger |
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The following fields are presented in the table: Member Last Name, MemberFirstName, Street, City, State, ZipCode and MemberFee. The table contains 75,000 documents. How would you build indexes for the table and why would you create these indexes?
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