A database is a structure that is used to hold data and it referred as a systematic collection of data.
Table:
A table is a logical structure that represents an entity state. It is one of the components of database.
One-to-Many Relationship:
When one record in a database table is associated with more than one record in another table, the relationship between the two tables is referred as one to many relationship. It is also represented as1: M relationship. This is the opposite of many to one relationship.
Crow Foot ERD:
The Crow Foot ERD is an Entity Relationship Diagram which is used to represent the cardinalities present in the basic ER diagram. It is used to represent the relationships present between two tuples or tables present in the database.
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Chapter 3 Solutions
Database Systems: Design, Implementation, & Management
- Integrate any programming language to mySQL with the implementation of Database Normalization and Creation of ER Model. What should I expect? 1. User login interface 2. An interface where I can input my details. (User registration form, Freshman Application Form, Credit Card Application Form, Bank Account Opening Form, and etc.) These are just samples, you can think of your own, of course. 3. From one whole big interface of registration form or any above-mentioned items, I should see the database normalization implemented from whole big table (1NF) to 3NF. The expectation is that the database should have 1NF table and lastly the 3NF tables.arrow_forwardThe CVT Company is a leader in the manufacture of work clothes. You are hired as database administrator for the company and your IT supervisor asked you to solve a retrieval speed problem they used to have with a large file for item records. Your supervisor mentioned that they have sorted the file but the problem didn’t improve, so they need to create a B+ tree index to solve the problem. Your supervisor outlined the way to do it: “The best way to accomplish this task is to scan the file, record by record, inserting each one using the B+ tree insertion procedure.” Being a fresh graduate, you noticed that since the file is already sorted there is a better way to do it. What performance and storage utilization problems are there with your supervisor’s approach? Explain how the bulk-loading algorithm provides a better alternative than the proposed scheme.arrow_forwardNeed a c++ program to connect to this database and perform add, search, remove, display operations. -- students create table students ( student_id int, name varchar(50), dob date, phone int, email varchar(50), address text, year_level int, section varchar(2), primary key(student_id) ); -- staff create table staff(staff_id int,name varchar(50),address text,phone int, email varchar(50),position varchar(20),salary int,primary key(staff_id) ); -- book_subject create table( subject_id int primary key, subject varchar(50)); -- books create table books( book_id int,title varchar(50),published_year int,isbn int,cost int, subject_id int, primary key(book_id),foreign key(subject_id) references book_subject(subject_id) ); -- book_issue create table book_issue( issue_id int, issue_date date, staff_id intjumb, student_id int, book_id int, return_date da primary key(issue_id), foreign key(staff_id) references…arrow_forward
- Consider the following scenario: there is only one vacant slot in a class and two students want to enroll. Which aspect of a database prevents them from sharing a single seat?arrow_forwardIn the case of a physical database, where do you begin?arrow_forwardER Modeling 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, 1999) and a score (such as 4 to 2). Draw the ER diagram to represent the above scenarioarrow_forward
- WRITE THE OF MYSQL IN PYTHON, JUST ANSWER THE 2ND QUESTION BY LOOKING AT THE FIRST QUESTION Create database and tables as given below by using Python. (a) Market database (b) Vendor: vendor id integer, vendor name varchar, license start date, license end date (c) Item:itemidinteger,itemnamevarchar,itemtypevarchar, previous price float, last sold date date (d) Auction: auction id integer, vendor id integer, item id integer, price float Choose primary and foreign keys depending on the relations in Market database design. Create arrays of at least 5 di↵erent records. Use these arrays to populate each table in the database.arrow_forwardProblem: implement database in MySQL for music(table: artist, album, track , played) and add multiple join operation, nested query and add any other 2 queriesarrow_forwardIf a relational database can't allow many-to-many links, can you provide any examples? Let us know about them if you have any.arrow_forward
- Task 1: The InstantRide Management team founded a new team for car maintenance. The new team is responsible for the small maintenance operations for the cars in the InstantRide system. The main idea is to take actions faster and minimize the time spent for the maintenance. Therefore, the Car Maintenance team wants to store MAINTENACE_TYPE_ID (char(5)) and a MAINTENANCE_TYPE_DESCRIPTION (varchar(30)) in the database. Using MAINTENANCE_TYPE_ID as the PRIMARY KEY, create a new table, MAINTENANCE_TYPES, and send the table description with the column names and types to the Car Maintenance team. 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…arrow_forwardTask 1: The InstantRide Management team founded a new team for car maintenance. The new team is responsible for the small maintenance operations for the cars in the InstantRide system. The main idea is to take actions faster and minimize the time spent for the maintenance. Therefore, the Car Maintenance team wants to store MAINTENACE_TYPE_ID (char(5)) and a MAINTENANCE_TYPE_DESCRIPTION (varchar(30)) in the database. Using MAINTENANCE_TYPE_ID as the PRIMARY KEY, create a new table, MAINTENANCE_TYPES, and send the table description with the column names and types to the Car Maintenance team.arrow_forwardplease answer with proper explanation and step by step solution.arrow_forward
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