Create A Conceptual Database Model Using MS Visio ✓ Solved

Create a conceptual database model using MS Visio

A. Lab # : BSBA BIS245A-2 B. Lab 2 of 7 : Skills Development in Visio; Creation of MS Access Database C. Lab Overview — Scenario / Summary TCOs: 1. Given a business situation in which managers require information from a database, determine, analyze, and classify that information so that reports can be designed to meet the requirements. 2. Given a situation containing entities, business rules, and data requirements, create the conceptual model of the database using a database modeling tool. 3. Given an existing relational database schema, evaluate and alter the database design for efficiency. 4. Given an existing database structure demonstrating efficiency and integrity, design the physical tables.

Scenario: You have been asked to create a conceptual database model using MS Visio Database Model Diagram Template. The purpose of this lab is to have you gain experience with the various modeling tools needed to create a conceptual model (entity relationship diagram) of a database. You will then modify the model for implementation as a MS Access database. You will create and modify one conceptual model.

You will then create a MS Access database based on the model developed in Visio, creating the necessary tables and relationships. Upon completing this lab, you will be able to 1. relying on detailed instructions, add two entities to the existing conceptual model (ERD), including attribute data types and required field lengths; 2. create a new MS Access database file; 3. using the model from Parts A of the lab, and relying on detailed instructions; create the first two tables in the database; 4. use the experience gained in creating the first two tables to add the remaining tables; 5. using the model from Part A of the lab, and relying on detailed instructions; create the relationship between the first two tables in the database; and 6. use the experience gained in creating the first relationship to create the remaining relationships between the tables.

D. Deliverables Section Deliverable Points Part A YourName Lab2.vsdx (Visio Diagram) Part B YourName Lab2.accdb (Access Database)

E. Lab Steps Preparation 1. Get the Visio diagram a. Download Lab2_StarterFile.vsdx file from your course iLab page, and Save the file to your local drive. 2. Using Citrix for MS Visio and/or MS Access a. If you are using the Citrix remote lab, follow the login instructions located in the iLab area in Course Home. b. You will have to upload the Lab2.vsdx file to your Citrix drive, or allow Citrix access to your system.

Lab: Part A: Create a Visio ERD with an Associative Entity Step 1: Open the Lab2.vsdx file a. Open the Lab2.vsdx file using Microsoft Office or Visio. b. If you are using Citrix, click on Microsoft Office Applications folder to start Visio. Then use the File menu, Open command to open the Lab2.vsdx file. Step 2: Add two new entities and relationships to the Visio diagram.

At this point, the OrderLine table does not have a primary key. This is an associative entity and will borrow its primary key from the two parent tables. To add to the OrderLine entity, you must first add the Set Foreign key attribute of ProdID. Next, drag a relationship shape to the diagram. Connect the one end to the Products entity, and the other end to the OrderLine entity.

End of Part A Part B. Creating the Access Database (Tables and Relationships) from the ERD Preparation Open the Visio file created in Part A of this iLab, you will reference this file in Part B. Step 1: Locate MS Office Applications a. If you are using Citrix, click on Microsoft Office Applications folder. b. If you are using Access on a local computer, select Microsoft Office from your Program Menu.

Step 2: Start MS Access a. Click on Microsoft Access and Microsoft Access should open.

Step 3: Open a Blank Database a. Click on the Blank desktop database Icon and name your database YourNameLab2.

Step 4: Create the Tables a. Open the Design view and create the Suppliers table and then the Products table following the ERD details.

YourNameLab2.vsdx (Visio Diagram)—From Lab2 Part A YourNameLab2.accdb (Access Database)—from Lab2 Part B Submit these files to the Week 2 iLab DropBox.

Paper For Above Instructions

The design and development of a conceptual database model are critical in addressing business needs effectively through the proper use of relational database management systems. The following steps illustrate the process taken to create a conceptual model using Microsoft Visio, develop it into an Access database, and ensure its practicality in real-world scenarios.

Understanding the Scenario and Requirements

In this lab, the aim is to create a conceptual database model that meets specific business requirements. This involves analyzing a scenario where managers need information from a database so they can make informed decisions. The process includes classifying information to design reports and utilize a database modeling tool for entity-relationship diagrams (ERDs).

To begin with, an ERD is essential in visually representing the relationships among various entities in the database. For this lab, the creation of two new entities termed 'Orders' and 'OrderLine' is mandatory. Each entity must have specific attributes as defined in the lab instructions to accurately reflect the business rules and requirements.

Creating the Conceptual Model in Visio

Utilizing Microsoft Visio allows for an intuitive approach to designing the database model. Upon opening the starter file, 'Lab2_StarterFile.vsdx', the first step is to add the new entities. The 'Orders' entity is identified as having attributes such as 'OrderID', 'OrderDate', and 'OrderShipName', among others. Each attribute is defined with its relevant data type, ensuring that the model adheres to the standards required for implementation.

Next, the 'OrderLine' entity is established to accommodate transactions related to orders, including attributes like 'OrdLineUnitPrice', 'OrdLineQuantity', and 'OrdLineDiscount'. It is essential to ensure that each attribute, especially those marked as required, is duly captured in the model. Furthermore, defining foreign keys is crucial for establishing relationships that link entities in the database.

The two newly added entities will be connected to existing relationships that facilitate data integrity and compliance with the relational database principles, reinforcing the importance of normalization in database design.

Transitioning to Access for Database Creation

Once the conceptual model has been defined in Visio, the next step involves using Microsoft Access to create a functioning database based on that model. This process starts with opening Access and creating a new database file named 'YourNameLab2.accdb'. The first table to create is the 'Suppliers' table, following the attributes defined in the Visio diagram. Setting data types, such as 'Short Text' for 'SupID' and 'SupCompanyName', is vital in ensuring that data captures are appropriate and meet expected formats.

Subsequently, further tables—'Products', 'OrderLine', and 'Orders'—are constructed in Access, adhering to the layout and specifications provided in the ERD. Each table requires meticulous attention to primary keys and relationships, with 'OrdLine' showcasing a composite primary key blending 'ProdID' and 'OrderID' to reflect its associative nature.

Establishing Relationships within the Database

Creating relationships between tables is paramount for maintaining data integrity. By establishing connections, such as between 'Suppliers' and 'Products', and indicating foreign keys, the relational integrity of the database is guaranteed. Referential integrity ensures that relationships remain valid and further, enforcing these constraints during the design aids in minimizing anomalies during data entry and retrieval processes.

Normalization of the database through these relationships promotes efficient data management, allows for seamless querying, and enhances data retrieval processes, all of which are critical for responding to managerial inquiries accurately.

Finalizing the Lab Requirements

Upon completion of the database creation and relationship establishment, it is crucial to save both the Visio diagram and Access database files adequately. These deliverables serve to showcase the work completed during the lab, meeting the submission requirements outlined in the lab documentation. Following this, ensure the files are submitted promptly to the designated DropBox for evaluation.

Conclusion

This lab exercise emphasizes the importance of a well-structured database design and how leveraging tools such as MS Visio and MS Access can facilitate effective data management. Through practical engagement with these tools, one gains a comprehensive understanding of database modeling, data relationships, and the criteria required for implementing a robust database solution.

References

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