User Account

All Pages

data dictionary, Database Management System

Assignment Help:
The database is to record information about artists for a (music) production company. An artist is the name of a singer or band; the name of the artist, the year the artist started recording, the number of members of the artist and the genre of music it plays are to be recorded. For example, the artist Queen was formed in 1970, had four members and played rock.
In addition to the information about artists the database will also record information about the members of an artist (referred to as musicians). The (unique) SIN, first name, last name, instrument, and email address of musicians is to be recorded. An artist must be associated with at least one musician, although may be associated with more. Musicians that are not associated with artists will not be maintained in the database; a musician may be associated with more than one artist. The database should also record the share of the revenue that a musician receives from songs recorded by an artist that the musician is associated with. If a musician is associated with more than one artist, they may have different shares from each artist. For example, Ian Gillan might receive 30% of the revenue from songs recorded by Deep Purple, and 80% of the revenue from songs recorded by Gillan.
The following information is to be recorded for songs, the unique ISRC (International Standard Recording Code), the song''s title, its duration, the year that it was recorded and the name of the song''s album. Songs are recorded by artists, an artist can record more than one song, and each song must be recorded by just one artist. Since the database may record artists that are just starting out an artist does not have to have recorded any songs.
Monthly sales of songs will also be recorded. For each month, year, vendor, and country the number of songs sold, and the total sale amount are to be recorded. For example, the song "Further Away" might be sold by iTunes Canada, iTunes UK, and Amazon Canada in September 2017, so would require three sales entries that record the number of songs sold and the total amounts for those vendors and countries in that month. A song may be sold many times (or, sadly, not at all).
The record labels assign each musician associated with an artist a representative (rep). A musician is assigned at most one rep for each artist that they are a part of (and may not be assigned any reps at all). A rep must be assigned to at least one musician and can be assigned to multiple musicians or even the same musician more than once if that musician is associated with multiple artists. A label representative has a (unique) SIN, first name, last name, label name and phone number. For example, Paul Rodgers might be associated with rep Bob for Free (who recorded the classic All Right Now) and rep Kate for Bad Company.
Finally, the writers of songs are to be recorded. A song may have more than one writer but must have at least one. Writers of songs not in the database (or prospective writers) will not be recorded. A song writer may write many songs. In addition to the writers'' SINs, first names and last names the percentage royalty that they earn for each song should be recorded. These royalty percentages may vary from song to song.

Related Discussions:- data dictionary

Give detail description on transactions, Give detail description on Transac...

Give detail description on Transactions. - Using transactions we can group all SQL commands into a single unit. - Transaction begins with some task and finishes only when a

Difference between internal tables and extra datasets, What is the differen...

What is the difference between internal tables and extract datasets? The lines of an internal table always have the similar structure. By using extract datasets, you can ha

With the help of a diagram defines typical element modules, With the help o...

With the help of a diagram defines the typical element modules of a DBMS? The functional elements of a database system can be widely divided into: 1) Storage manager and 2) q

What is explicit update, What is Explicit update In explicit update,...

What is Explicit update In explicit update, each derived attribute is defined with respect to one, or more fundamental base object(s). The object designer determines that de

Marketing interface, as a customer service employee explain five measures y...

as a customer service employee explain five measures you would recommend to make even a displeased students patronize the school canteen

Define granularity and hierarchy of granularity of locks, Define granularit...

Define granularity, hierarchy of granularity of locks & multiple granularity locking. Explain the modified two phase locking along with multiple granularity locking. Ans: The s

Cartisian product, Explain the cartesian product in Database Management Sys...

Explain the cartesian product in Database Management System

What are the concurrency issues, Concurrency issues Data integrity...

Concurrency issues Data integrity: Threads accessing same object need to be synchronized, such as: banking account. Deadlock: One or more threads in system are perman

What is e-r model, What is E-R model? This data model is based on real ...

What is E-R model? This data model is based on real world that having of basic objects called entities and of relationship between these objects. Entities are explained in a da

Explain the check clause, Explain the Check Clause The CHECK clause is ...

Explain the Check Clause The CHECK clause is employed to at the end of a CREATE TABLE statement specify table constraints. This is known as table-based constraint because it ap

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd