https://github.com/filip-kustura/sql-database-assignment
Database Systems course project, completed in two parts: designing an arbitrary relational database and implementing it by creating, loading and querying data to meet specified criteria. Each query was accompanied by detailed explanations. Developed during the spring of 2020.
https://github.com/filip-kustura/sql-database-assignment
chen-notation database database-design database-normalization database-schema entity-relationship-diagram mysql nba normalization relational-database sql sql-queries university-project
Last synced: 3 months ago
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Database Systems course project, completed in two parts: designing an arbitrary relational database and implementing it by creating, loading and querying data to meet specified criteria. Each query was accompanied by detailed explanations. Developed during the spring of 2020.
- Host: GitHub
- URL: https://github.com/filip-kustura/sql-database-assignment
- Owner: filip-kustura
- Created: 2022-10-17T14:08:37.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-09-14T20:09:44.000Z (10 months ago)
- Last Synced: 2025-01-29T16:28:49.991Z (5 months ago)
- Topics: chen-notation, database, database-design, database-normalization, database-schema, entity-relationship-diagram, mysql, nba, normalization, relational-database, sql, sql-queries, university-project
- Homepage: http://web.studenti.math.pmf.unizg.hr/~manger/bp/BP-UputaZadace.htm
- Size: 714 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
# Database Course Project (Spring 2020)
This repository contains the work completed for the **_Database systems_** course assignment, which was divided into two main parts: **Database Design** and **Implementation & Queries**. The project focuses on designing a relational database and executing various SQL queries in **MySQL**.
---
## First Part: Database Design
This phase involved the conceptualization and documentation of the database schema. The following steps were taken:
- **Choosing a Database Theme**: Selecting a theme with sufficient entities and relationships.
- **Conceptual Schema Design**: Documenting the schema based on chosen entities and their relationships.
- **Entity-Relationship (ER) Diagram**: Creating a reduced ER diagram using **Chen notation**, covering:
- Entities
- Relationships
- Cardinalities of relationships
- **Accompanying Text**: Defining attributes for each entity or relationship, and specifying the primary key for each entity.
- **Relational Schema Conversion**: Converting the conceptual schema into a relational schema.
- **Normalization**: Applying normalization principles to ensure database integrity.
---
## Second Part: Implementation & Queries
This phase focused on the implementation of the designed database and performing SQL queries using **MySQL**. An internal application was used for accessing personal MySQL databases, providing the necessary permissions for creating and updating tables.
### Key Tasks:
- **Table Creation**: Designing and populating the tables with sufficient data rows.
- **Query Creation**: Developing four meaningful SQL queries that involve multiple tables. Some of the queries had to include **grouping** or be **nested**.
- **Query Documentation**: Detailed descriptions of each query, including:
- **What the query returns**: Explanation of the result set (output table).
- **How the query works**: Step-by-step description of the query's logic and execution process.
---
## Project Deliverables
For the second part of this assignment, only the **SQL queries** and their corresponding explanations are included in the repository. The commands for creating and populating the tables are not part of the deliverables.
The queries are stored in a _PDF_ file.