FIGURE Q3.13 THE CH03_VENDINGCO DATABASE TABLES Database name: Ch03_VendingCo Table name: MACHINE MACHINE PRODUCT MACHINE PRICE Chips Chocolate Bar Table name: BOOTH BOOTH PRODUCT BOOTH PRICE Chips Cola Energy Drink 1.25 1.5 1.25 Energy Drink
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Create the table that results from applying a UNION relational operator to the tables shown in Figure Q3.13.
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- An in-memory database (IMDB) is a database management system that stores the entire data-base in ____________ a. random access memory b. read only memory c. distributed servers d. virtual memory3.1 Create a database Cat with the following schema: CREATE TABLE owners ( ownerid integer, name text, age integer, PRIMARY KEY (ownerid) ); CREATE TABLE cats ( catid integer, owner integer, name text, breed text, age integer, PRIMARY KEY (catid), FOREIGN KEY (owner) REFERENCES owners);solve with php and html Question 1 We need to create a web site for an online health centerCreate a database containing three tables (Name the DB by your name andID, for example, Fadi201930234):gender- id int Primary Key AutoIncrement- name varchar (25) Fill the table with some values Salutation- SID (int)- title (Varchar 10) Fill the table with some values Employee- empID int PrimaryKey Auto Increment- name varchar(25)- rate double- hours double- salutationID FK- genderID FK
- Take a look at the database structure for cities in nations below. There are numerous cities in a nation, and the same city name can be found in several countries. Country (integer ID, string (unique) name) (serialNo: integer (not null), CountryID: integer, CityName: string, Population: integer) Is it possible for a city to have an unknown CityName? No, it's against the rules of the domain. Yes. No, infringe.mysql> CREATE TABLE School ( -> SchoolNumber INT PRIMARY KEY, -> Name VARCHAR(50), -> Address VARCHAR(100), -> PhoneNumber BIGINT, -> Built DATE, -> Size INT -> );ERROR 1046 (3D000): No database selectedmysql> SELECT * FROM School;ERROR 1046 (3D000): No database selectedIndexing Consider a relational database that consists of the relational tables created by the following CREATE TABLE statements: CREATE TABLE PART( P_PARTKEY NUMBER(12) NOT NULL, P_NAME VARCHAR(55) NOT NULL, P_RETAILPRICE NUMBER(12,2) NOT NULL, CONSTRAINT PART_PEKEY PRIMARY KEY (P_PARTKEY) ); CREATE TABLE SUPPLIER( S_SUPPKEY NUMBER(12) NOT NULL, S_NAME CHAR(25) NOT NULL S_NATIONKEY NUMBER(12) NOT NULL, S_PHONE CHAR(15) NOT NULL, CONSTRAINT SUPPLIER_PKEY PRIMARY KEY (S_SUPPKEY) ); CREATE TABLE PARTSUPP( PS_PARTKEY NUMBER(12) NOT NULL, PS_SUPPKEY NUMBER(12) NOT NULL, PS_SUPPLYCOST NUMBER(12,2) NOT NULL, CONSTRAINT PARTSUPP_PKEY PRIMARY KEY (PS_PARTKEY, PS_SUPPKEY), CONSTRAINT PARTSUPP_FKEY1 FOREIGN KEY (PS_PARTKEY) REFERENCES PART(P_PARTKEY), CONSTRAINT PARTSUPP_FKEY2 FOREIGN KEY (PS_SUPPKEY) REFERENCES SUPPLIER(S_SUPPKEY) ); Determine what index should be created to improve the performance of the queries listed below in the best possible way. Consider each one of the…
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- View 2 Seneca Courses Inc. Product Spreadsheet All the course books are maintained on the following Product spreadsheet. SCI is currently having difficulty searching for books written by the same author, and would like the new database system to list each author separately. There can be one or many authors for each book, but there is no limit to the number of authors of a book. PROD ID TITLE EDITION Purchase Cost Retail Price AUTHOR 100860 DATABASE SYSTEMS: DESIGN AND IMPLEMENTATION THIRD EDITION $84.98 $99.98 CARLOS CORONEL, PETER ROB 100861 DATABASE SYSTEMS: DESIGN AND IMPLEMENTATION FOURTH EDITION $92.82 $109.20 CARLOS CORONEL, PETER ROB 100871 MODERN RETAILING FOURTH EDITION $88.36 $110.45 DANIEL CASTON, JENNY TAPSCOTT 100890 UNDERSTANDING MICROSOFT ACCESS NINTH EDITION $65.52 $72.80 PIERRE LEBLAND, ROBERT COBB 102130 ORACLE: INTRODUCTION TO PL/SQL $53.24 $59.15 PHILIP ROBB 200376 ORACLE:…Suppose you are given the following requirements for a simple database for the National Hockey League (NHL): the NHL has many teams, each team has a name, a city, a coach, a captain, and a set of players, each player belongs to only one team, each player has a name, a position (such as left wing or goalie), a skill level, and a set of injury records, a team captain is also a player, a game is played between two teams (referred to as host team and guest team) and has a date (such as May 11th, 2019) and a score (such as 4 to 2). Construct a concise ER diagram for the NHL database.Giving the following schema for a supermarket database, specify the domain constrains for each attribute. CUSTOMERS (CustomerID , First_Name, Last_Name) EMPLOYEES (EmployeeID, Name, Email, PhoneNo) INVOICES( InvoiceID, Amount_Paid, Invoice_Date)