Transform the ERD below to a relational model using the text-based form. REPAIRSHOP RID Location Phone Number Capacity CAR CID Stand Type Release Date Provide your answer in the format given below. Table_Name(Column1, Column2, Column3, Column4,...) Note: Use solid line to indicate the primary keys and use dash line (- foreign keys. -) to indicate the

Transform the ERD below to a relational model using the text-based form. REPAIRSHOP RID Location Phone Number Capacity CAR CID Stand Type Release Date Provide your answer in the format given below. Table_Name(Column1, Column2, Column3, Column4,...) Note: Use solid line to indicate the primary keys and use dash line (- foreign keys. -) to indicate the

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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SQL DML/DDL There are five tables describing employees of a company, departments, buildings, which department(s) an employee works in (and a percentage of the time for each), and in which building an employee works (an employee may have more than one office). The primary key of each table is the attribute(s) in capitals and underlined. The foreign keys are in italics. Other attributes are not necessarily unique.Employee (EID, Ename, Salary, Start_Date, End_Date)Building (BID, Bname, Address)Department (DID, Dname, Annual_Budget)In_Department (EID, DID, Percentage_Time)In_Building (EID, BID)Write the SQL statements for the following.1. Find the names of Departments where NO employees work. 2. For employees who are still working in the company, end date has no value (empty). For those who have left the company and have end date values, show their names and the duration of their employment in years. 3. Find the names of buildings where more than 50 employees work. 4. The tables have…
For this problem create a (temporary) table called instructor_course_nums. Write a procedure that accepts an instructor ID as input. The procedure calculates the total number of course sections taught by that instructor, and adds a tuple to the temporary table consisting of the instructors ID number, name, and total courses taught - call these attributes: ID, name, and tot_courses. If the instructor already has an entry in the table,then the procedure makes sure the total number of courses taught in the temporary table is up-to-date. You must name your procedure: Written in PostgreSQL
Create lookup functions to complete the summary section. In cell I6, create a formula using the VLOOKUP function to display the number of hours worked in the selected week. Look up the week number in cell I5 in the range A17:G20, and return the value in the 2nd column. Use absolute references for cell I5 and the range A17:G20.
The Horse table has the following columns: ID - integer, auto increment, primary key RegisteredName - variable-length string Breed - variable-length string, must be one of the following: Egyptian Arab, Holsteiner, Quarter Horse, Paint, Saddlebred Height - decimal number, must be between 10.0 and 20.0 BirthDate - date, must be on or after Jan 1, 2015 Insert the following data into the Horse table: RegisteredName Breed Height BirthDate Babe Quarter Horse 15.3 2015-02-10 Independence Holsteiner 16.0 2017-03-13 Ellie Saddlebred 15.0 2016-12-22 NULL Egyptian Arab 14.9 2019-10-12
Task 2: The Car Maintenance team also wants to store the actual maintenance operations in the database. The team wants to start with a table to store CAR_ID (CHAR(5)), MAINTENANCE_TYPE_ID (CHAR(5)) and MAINTENANCE_DUE (DATE) date for the operation. Create a new table named MAINTENANCES. The PRIMARY_KEY should be the combination of the three fields. The CAR_ID and MAINTENANCE_TYPE_ID should be foreign keys to their original tables. Cascade update and cascade delete the foreign keys. Create a new table to store maintenance operations Test Query DESCRIBE MAINTENANCES Expected Results Field Type Null Key Default Extra CAR_ID char(5) NO PRI NULL MAINTENANCE_TYPE_ID char(5) NO PRI NULL MAINTENANCE_DUE date NO PRI NULL
Task 2: The Car Maintenance team also wants to store the actual maintenance operations in the database. The team wants to start with a table to store CAR_ID (CHAR(5)), MAINTENANCE_TYPE_ID (CHAR(5)) and MAINTENANCE_DUE (DATE) date for the operation. Create a new table named MAINTENANCES. The PRIMARY_KEY should be the combination of the three fields. The CAR_ID and MAINTENACNE_TYPE_ID should be foreign keys to their original tables. Cascade update and cascade delete the foreign keys. Answer in MYSQL please
MySQL CREATE TABLE students ( id INT PRIMARY KEY, first_name VARCHAR(50), last_name VARCHAR(50), age INT, major VARCHAR(50), faculty VARCHAR(50)); CREATE TABLE location ( id INT PRIMARY KEY, name VARCHAR(50), rooms INT); CREATE TABLE faculty ( id INT PRIMARY KEY, name VARCHAR(50), department_id INT); 4. Find the number of employees in each department who get no commission or have salary less than5000.5. Find the maximum salary of employees in each department that the employee was hired 15 yearsbefore now. *hint: user TIMESTAMPDIFF(<unit type>,<Date_value 1>,<Date_value 2>), the unitcan be YEAR, MONTH, DAY, HOUR, etc...6. Find the last name of all employees that were not hired on Tuesday *hint: (UseDATE_FORMAT() function amd the format you need is %W, also use UPPER()7. Find the number of employees in each department who have a manager.8. Find the number of employees for each manager whose employees' minimum salary is greaterthan 5000.9. Find the number of…
he Horse table has the following columns: ID - integer, primary key RegisteredName - variable-length string Breed - variable-length string Height - decimal number BirthDate - date Write a SELECT statement to select the registered name, height, and birth date for only horses that have a height between 15.0 and 16.0 (inclusive) or have a birth date on or after January 1, 2020.
Go to the w3schools website’s SQL browser IDE. This is where you canwrite and test your SQL code using their databases. Once you are happywith it, paste your code in a text file named Student.txt and save it in yourtask folder.● Write the SQL code to create a table called Student. The table structure issummarised in the table below (Note that STU_NUM is the primary key):Attribute Name Data TypeSTU_NUM CHAR(6)STU_SNAME VARCHAR(15)STU_FNAME VARCHAR(15)STU_INITIAL CHAR(1)STU_STARTDATE DATECOURSE_CODE CHAR(3)PROJ_NUM INT(2)● After you have created the table in question 1, write the SQL code to enterthe first two rows of the table as below:STU_NUMSTU_SNAMESTU_FNAMESTU_INITIALSTU_STARTDATECOURSE_CODEPROJ_NUM01 Snow John E 05-Apr-14 201 602 Stark Arya C 12-Jul-17 305 11● Assuming all the data in the Student table has been entered as shownbelow, write the SQL code that will list all attributes for a COURSE_CODE of305.…
Insert a row into the LARGE_PROPERTY table for a new property. The office number is 1, The address is 2643 Lugsi Dr., The number of bedrooms is 3, The number of floors is 2, The monthly rent is $775, The owner number is MA111. Make sure to include the period (.) in the address.
SQL: For every invoice, display the invoice number, invoice date and the total dollar amount for all products purchased in the invoice, ordered by invoice number in descending order and then by invoice date in ascending order. Here you will use an aggregate SUM(x,y) function in your SELECT clause to calculate the total dollar amount (a calculated field – name it TOTAL). Don’t forget to join on the tables as well. [hint: you should have 8 rows of output ordered properly]. select inv_number, inv_date sum(list_price) as 'total' from invoice, line order by desc inv_num, asc inv_date. I am getting the error: ORA-00923: FROM keyword not found where expected Am I formulating the query incorrectly?
Using the Winners table from Figure 12-2, write a parameter query that selects only ananimated picture’s Year field.