Draw An Enterprise Data Model For The Book Rental System ✓ Solved

Draw an enterprise data model for the book rental system.

In the domain of database management, the significance of a well-structured enterprise data model is paramount, particularly when considering the specific needs of a book rental shop. In this case, we will develop an enterprise data model based on the operational requirements and transactions involved in the book rental process.

Enterprise Data Model for Book Rental Shop

The enterprise data model for the book rental system consists of several key entities and their relationships. Below are the primary entities identified for this model:

  • Customer: This entity represents individuals who rent books. Each customer has attributes such as CustomerID (Primary Key), Name, Address, Phone Number, MembershipID, and Security Deposit.
  • Book: This entity records details about the books available for rental. Attributes include BookID (Primary Key), Title, Author, ISBN, Publication Year, and Rental Price.
  • Transaction: This entity captures the details of each rental transaction. Attributes include TransactionID (Primary Key), CustomerID (Foreign Key), BookID (Foreign Key), DateBorrowed, DueDate, ReturnDate, and PenaltyAmount.
  • Vendor: This entity represents the suppliers from whom the books are purchased. Attributes consist of VendorID (Primary Key), VendorName, ContactInfo, and Address.

The relationships between these entities are as follows:

  • Customer to Transaction: One-to-Many (1:M) relationship, where one customer can have multiple transactions.
  • Book to Transaction: One-to-Many (1:M) relationship, where one book can be associated with multiple transactions.
  • Vendor to Book: One-to-Many (1:M) relationship, where one vendor can supply multiple books.

Thus, the enterprise data model effectively captures the significant entities and their interrelationships critical for the functioning of the book rental shop.

Identify the Number of Tables and Relationships

From the above model, we can identify three main tables corresponding to the entities:

  • Customer Table: Includes all attributes corresponding to the 'Customer' entity.
  • Book Table: Consists of attributes defined in the 'Book' entity.
  • Transaction Table: Contains the attributes from the 'Transaction' entity.

Additionally, the relationships between these tables are structured as follows:

  • Customer Table and Transaction Table: A foreign key in the Transaction table links to the primary key in the Customer table, enforcing the 1:M relationship.
  • Book Table and Transaction Table: A foreign key in the Transaction table connects to the primary key in the Book table, maintaining the 1:M relationship.
  • Vendor Table and Book Table: A foreign key in the Book table refers to the primary key in the Vendor table, again preserving the 1:M relationship.

Design Attributes for Each Table

The attributes for each table representing the entities in the book rental system can be detailed as follows:

Customer Table

  • CustomerID: Integer (Primary Key)
  • Name: String
  • Address: String
  • PhoneNumber: String
  • MembershipID: String
  • SecurityDeposit: Decimal

Book Table

  • BookID: Integer (Primary Key)
  • Title: String
  • Author: String
  • ISBN: String
  • PublicationYear: Integer
  • RentalPrice: Decimal
  • VendorID: Integer (Foreign Key)

Transaction Table

  • TransactionID: Integer (Primary Key)
  • CustomerID: Integer (Foreign Key)
  • BookID: Integer (Foreign Key)
  • DateBorrowed: Date
  • DueDate: Date
  • ReturnDate: Date
  • PenaltyAmount: Decimal

Vendor Table

  • VendorID: Integer (Primary Key)
  • VendorName: String
  • ContactInfo: String
  • Address: String

Question 2: Data Needs of an Accounting Department

In a small tax services firm, the data needs of an accounting department are essential for maintaining financial records, managing client information, and ensuring compliance with tax regulations. Here are some of the key data entities that would be relevant:

  • Client: Represents tax clients and includes attributes like ClientID (Primary Key), Name, Address, PhoneNumber, and Email.
  • TaxReturn: Records information about tax submissions, including ReturnID (Primary Key), Year, TotalIncome, Deductions, and NetTax.
  • Employee: Contains details about accounting personnel, such as EmployeeID (Primary Key), Name, Position, and ContactInfo.

The relationships between these entities can be outlined as:

  • Client to TaxReturn: One-to-Many (1:M); a client can file multiple tax returns over different years.
  • Employee to TaxReturn: One-to-Many (1:M); an employee can assist multiple clients in filing their tax returns.

The relevance of these entities lies in their capacity to provide a structured approach to managing client data, tax documentation, and employee contributions within the accounting department. This arrangement ensures that all financial dealings are organized effectively and can be tracked for reporting and compliance purposes.

References

  • Hoffer, J. A., Ramesh, V., & Topi, H. (2013). Modern Database Management. Pearson Education.
  • Elmasri, R., & Navathe, S. B. (2015). Fundamentals of Database Systems. Pearson.
  • Silberschatz, A., Korth, H. F., & Sudarshan, S. (2011). Database System Concepts. McGraw-Hill.
  • Date, C. J. (2004). An Introduction to Database Systems. Addison-Wesley.
  • Rob, P., & Coronel, C. (2007). Database Systems: Design, Implementation, and Management. Cengage Learning.
  • Connolly, T., & Begg, C. (2014). Database Systems: A Practical Approach to Design, Implementation, and Management. Pearson.
  • North, R. (2013). A Beginner's Guide to Database Design. CreateSpace Independent Publishing Platform.
  • Hernandez, M. J. (2012). Database Design for Mere Mortals: A Hands-On Guide to Relational Database Design. Addison-Wesley.
  • O'Neil, P., & O'Neil, E. (2014). Database: Principles of Design, Implementation, and Management. Cengage Learning.
  • Elmasri, R., & Navathe, S. B. (2013). Fundamentals of Database Systems (6th ed.). Addison-Wesley.

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