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Return how many artists are currently in the band, how many artists have ever been in the band (be careful not to count the same artists multiple times if they've left and rejoined) and the number of albums the band has made. (This is tricky! There are a number of ways you can approach this. Order by band from A-Z. Attached are tables and their values.

Return how many artists are currently in the band, how many artists have ever been in the band (be careful not to count the same artists multiple times if they've left and rejoined) and the number of albums the band has made. (This is tricky! There are a number of ways you can approach this. Order by band from A-Z. Attached are tables and their values.

Database System Concepts
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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Return how many artists are currently in the band, how many artists have ever been in the band (be careful not to count the same artists multiple times if they've left and rejoined) and the number of albums the band has made. (This is tricky! There are a number of ways you can approach this.

Order by band from A-Z.

Attached are tables and their values.

```sql /* Create all tables. Order matters due to foreign keys. */ CREATE TABLE p_artist ( id INT AUTO_INCREMENT, fname VARCHAR(30) NOT NULL, lname VARCHAR(30), dob DATE, hometown VARCHAR(40), gender CHAR(1), PRIMARY KEY (id) ) ENGINE = innodb; CREATE TABLE p_band ( id INT AUTO_INCREMENT, title VARCHAR(50) NOT NULL, year_formed YEAR, PRIMARY KEY (id) ) ENGINE = innodb; CREATE TABLE p_member ( artist_id INT NOT NULL, band_id INT NOT NULL, joined_date DATE, leave_date DATE, FOREIGN KEY (artist_id) REFERENCES p_artist(id), FOREIGN KEY (band_id) REFERENCES p_band(id) ) ENGINE = innodb; CREATE TABLE p_album ( id INT not null, pub_year YEAR, title VARCHAR(50), publisher VARCHAR(50), format CHAR(1), band_id INT NOT NULL, PRIMARY KEY (id), FOREIGN KEY (band_id) REFERENCES p_band(id) ) ENGINE = innodb; CREATE TABLE p_song ( album_id INT NOT NULL, name VARCHAR(30) NOT NULL, length TIME, FOREIGN KEY (album_id) REFERENCES p_album(id) ) ENGINE = innodb; ``` ### Explanation: This SQL script creates a database schema for managing musical information. It includes tables for artists, bands, members, albums, and songs. 1. **p_artist Table**: Stores details about artists, including first name, last name, date of birth, hometown, and gender. Each artist has a unique ID as the primary key. 2. **p_band Table**: Holds information about musical bands, such as the title (name) and the year the band was formed. Each band is also uniquely identified by an ID. 3. **p_member Table**: Establishes a relationship between artists and bands. It records when an artist joined or left a band using `artist_id` and `band_id` as foreign keys that reference the `p_artist` and `p_band` tables, respectively. 4. **p_album Table**: Contains details about albums, including publication year, title, publisher, format, and the associated band. Each album requires a unique ID, and the `band_id` serves as a foreign key referencing a band. 5. **p_song Table**
Transcribed Image Text:```sql /* Create all tables. Order matters due to foreign keys. */ CREATE TABLE p_artist ( id INT AUTO_INCREMENT, fname VARCHAR(30) NOT NULL, lname VARCHAR(30), dob DATE, hometown VARCHAR(40), gender CHAR(1), PRIMARY KEY (id) ) ENGINE = innodb; CREATE TABLE p_band ( id INT AUTO_INCREMENT, title VARCHAR(50) NOT NULL, year_formed YEAR, PRIMARY KEY (id) ) ENGINE = innodb; CREATE TABLE p_member ( artist_id INT NOT NULL, band_id INT NOT NULL, joined_date DATE, leave_date DATE, FOREIGN KEY (artist_id) REFERENCES p_artist(id), FOREIGN KEY (band_id) REFERENCES p_band(id) ) ENGINE = innodb; CREATE TABLE p_album ( id INT not null, pub_year YEAR, title VARCHAR(50), publisher VARCHAR(50), format CHAR(1), band_id INT NOT NULL, PRIMARY KEY (id), FOREIGN KEY (band_id) REFERENCES p_band(id) ) ENGINE = innodb; CREATE TABLE p_song ( album_id INT NOT NULL, name VARCHAR(30) NOT NULL, length TIME, FOREIGN KEY (album_id) REFERENCES p_album(id) ) ENGINE = innodb; ``` ### Explanation: This SQL script creates a database schema for managing musical information. It includes tables for artists, bands, members, albums, and songs. 1. **p_artist Table**: Stores details about artists, including first name, last name, date of birth, hometown, and gender. Each artist has a unique ID as the primary key. 2. **p_band Table**: Holds information about musical bands, such as the title (name) and the year the band was formed. Each band is also uniquely identified by an ID. 3. **p_member Table**: Establishes a relationship between artists and bands. It records when an artist joined or left a band using `artist_id` and `band_id` as foreign keys that reference the `p_artist` and `p_band` tables, respectively. 4. **p_album Table**: Contains details about albums, including publication year, title, publisher, format, and the associated band. Each album requires a unique ID, and the `band_id` serves as a foreign key referencing a band. 5. **p_song Table**
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