Create a Conceptual and Logical Model using the following requirements. An infor
ID: 666298 • Letter: C
Question
Create a Conceptual and Logical Model using the following requirements.
An information studies student wants to keep track of the following information. A publishers publishes two kinds of publications: books and journals. Any one publisher publishes at least one book and/or at least one journal. Each book can be written by one or more authors and one author can write one or more books. Each book and journal is characterized by one or more indexed keywords, which are represented by a keyword number and keyword. Not every keyword is used by the journals, however. Both books and journals have a unique number (such as ISBN# for a book and ISSN# for a journal), title and a publisher. For books, the student tracks the published year, all author information and their institutions. For journals, the student keeps the starting year first published, the number of issues to be published per year and the category of the journal (such as academic, newsletter, trade). Each publisher has name, address and phone. Each author has an ID number, name, address, phone, author's affiliated institution and the address of the institution. An author may be affiliated with more than one institution. The student would like to keep only authors who are participating in writing at least one book and institutions that have such authors.
Explanation / Answer
On the given scenario, the Entities and their corresponding attributes are:
Entities:
Publisher
Attributes:
Publisher_ID *
Publisher_Name
Publisher_Address
Publishing_since
Publisher_phone
Books:
Attributes:
ISBN#*
Title
Publisher_ID
Keyword_No
Keyword
Journals
Attributes:
ISSN#*
Title
Publisher_ID
Keyword_No
Keyword
Year_first_published
Num_Issues_per_year
Category
Author
Attributes:
Author_id*
Author_name
Address
Phone
Institute_ID
Institute_Address
Institution
Attributes:
Institution_ID*
Institution_Name
Author_id
Student
Attributes:
Student_ID
Book_ID
Published_year
Author_ID
Institution_ID