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It follows a **REST-style architecture**, exposing endpoints for data management and interaction with a relational database.  \n\n\n---\n\n## 📂 Features  \n- **Java Servlets backend** – request handling and business logic  \n- **REST-style API** – structured endpoints for CRUD operations  \n- **Relational database integration** – via JDBC and SQL  \n- **Tricky SQL queries** – involving joins, aggregations, nested queries, and constraints  \n- **Deployment** – configured and run in an **Apache Tomcat servlet container**  \n\n---\n\n## 🛠️ Setup \u0026 Run  \n\n1. Install [Apache Tomcat](https://tomcat.apache.org/) (tested with v9+).  \n2. Clone the repository:  \n   ```bash\n   git clone git@github.com:antoniakras/retail-transactions-system.git\n   cd retail-transactions-system\n3. Deploy the .war file or the compiled classes to your Tomcat webapps/ directory.\n\n4. Start Tomcat and access the application via: http://localhost:8080/hy360\\\n\n---\n\n\n🔍 Queries Highlight\n\n* The project goes beyond basic CRUD and demonstrates:\n\n* Multi-table JOINs to fetch aggregated information\n\n* Nested subqueries for filtering and reporting\n\n* Group by + Having for advanced analytics\n\n* Referential integrity checks with constraints\n\n* Performance-aware query design\n\n\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fantoniakras%2Fretail-transactions-system","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fantoniakras%2Fretail-transactions-system","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fantoniakras%2Fretail-transactions-system/lists"}