DATABASE DESIGN PROBLEMS:

NOTE*: I have to help someone who is not physically here finish his assignment, but I've never learned anything about database. Show me the right answers please. Read carefully and full answers will be greatly rated. Thanks!!!

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Question:

For each of the descriptions below and using Oracle SQL Developer Data modeler, express the relationships in each description graphically with an E-R diagram.

NEED SCREENSHOTS of all of the E-R diagrams

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Part 03

g. An Artist Management company would like to store information about artists. Artists are identified by an Id and are described by their Name, Age and Gender. Most of the artists are under contract with the company and for them the company stores multiple Samples of their work. There are however also interested in tracking prospective artists, for whom they have no sample of their work but they may have recommendations about them from different sources.

h. There are a lot of sources that hint the company about prospective artists. These sources are identified by an Id and they may also have a name, description (critic or newspaper article or local performance stage) and a Quality index which is an attribute that describes the quality of the information that this source has provided in the past. Each source is making any number of recommendations about prospective artists and every prospective artist may be recommended by any number of sources.

i. Now update the previous diagram to take into account that for each recommendation the company needs to store a summary, a quality evaluation from the source for the prospective artist and the date that the recommendation was received. Notice that every recommendation that comes from one source can be a recommendation for more than one prospective artists (as they may be a group).

j. The company would also like to store information about News Items that are published for each of the artists. These Items are identified by an Id are described by the source of the news and the content. Every news item is for one of more artists of the company, while each artist may have any number (even zero) of news items associated with him.