## What is Data Modeling?

- Data is everywhere, but it can quickly become overwhelming.
- Think of it like exploring a new city. Without a map, you'd be lost, wandering aimlessly.
- **Data modeling is like creating that map for your data.**

## What's Inside This Repository?

- **Simple & Practical guide to data modeling**
  - This repository breaks down data modeling into easy-to-understand, practical steps.
- **This repository answers questions like:**
  - What is Data Modeling?
  - Why is it important?
  - Different approaches to data modeling.
  - Tools and technologies to help you.
  - Real-world examples and case studies.
- **Practical & Useful**
  - Each section is designed to be beginner-friendly, with clear explanations and examples.
  - Whether you're a data scientist, engineer, or just curious about data, this repository has something for you.

## Visually Explore the Repository

- Click on any link within the diagram below to go directly to navigate through the repository.
- If you are quite new to the concept of Data Modeling, you can start with the [Overview of Data Modeling Concepts](100-data_modeling_approaches/05-overview_of_data_modeling_concepts.md).

```mermaid
graph LR
    %% Main node
    DM["Data Modeling Approaches"]
    style DM fill:#e5e5e5,stroke:#333,stroke-width:2px
    click DM href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/05-overview_of_data_modeling_concepts.md" "Click for more information"

    %% First level connections
    DM --> RDM
    DM --> GDM
    DM --> SDM
    DM --> DDM

    %% Main approaches - Parent Level 1
    RDM["Relational Data Modeling"]
    GDM["Graph Data Modeling"]
    SDM["Semantic Data Modeling"]
    DDM["Document-oriented Data Modeling"]
    style RDM fill:#ffebee,stroke:#d32f2f,stroke-width:2px
    style GDM fill:#e3f2fd,stroke:#1565c0,stroke-width:2px
    style SDM fill:#e8f5e9,stroke:#2e7d32,stroke-width:2px
    style DDM fill:#f3e5f5,stroke:#6a1b9a,stroke-width:2px
    click RDM href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/10-relational_data_modeling.md" "Click for more information"
    click GDM href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/20-graph_data_modeling.md" "Click for more information"
    click SDM href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/30-semantic_data_modeling.md" "Click for more information"
    click DDM href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/40-json_based_modeling.md" "Click for more information"

    %% First level Implementations - Parent Level 2
    Tables["Tables & SQL"]
    NodesEdges["Nodes & Edges"]
    Documents["JSON Documents"]
    RDM --> Tables
    GDM --> NodesEdges
    DDM --> Documents
    style Tables fill:#ffebee,stroke:#d32f2f,stroke-width:2px
    style NodesEdges fill:#e3f2fd,stroke:#1565c0,stroke-width:2px
    style Documents fill:#f3e5f5,stroke:#6a1b9a,stroke-width:2px
    click Tables href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/10-relational_data_modeling.md" "Click for more information"
    click NodesEdges href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/20-graph_data_modeling.md" "Click for more information"
    click Documents href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/40-json_based_modeling.md" "Click for more information"

    %% Tools and Technologies & Semantic specifics - Parent Level 3
    ERTools["ER Diagram Tools"]
    UMLTools["UML Tools"]
    TMFSID["TMForum SID"]
    GraphTools["Graph Database Tools"]
    DocumentTools["Document DB Tools"]
    RDF["RDF - Resource Description Framework"]
    RDFS["RDFS - RDF Schema"]
    OWL["OWL - Web Ontology Language"]
    Tables --> ERTools
    Tables --> UMLTools
    Tables --> TMFSID
    NodesEdges --> GraphTools
    Documents --> DocumentTools
    SDM --> RDF
    SDM --> RDFS
    SDM --> OWL
    style ERTools fill:#ffebee,stroke:#d32f2f,stroke-width:2px
    style UMLTools fill:#ffebee,stroke:#d32f2f,stroke-width:2px
    style TMFSID fill:#ffebee,stroke:#d32f2f,stroke-width:2px
    style GraphTools fill:#e3f2fd,stroke:#1565c0,stroke-width:2px
    style DocumentTools fill:#f3e5f5,stroke:#6a1b9a,stroke-width:2px
    style RDF fill:#e8f5e9,stroke:#2e7d32,stroke-width:2px
    style RDFS fill:#e8f5e9,stroke:#2e7d32,stroke-width:2px
    style OWL fill:#e8f5e9,stroke:#2e7d32,stroke-width:2px
    click ERTools href "https://github.com/kanad13/data_modeling/blob/master/120-data_modeling_tools/10-er_diagram_tools.md" "Click for more information"
    click UMLTools href "https://github.com/kanad13/data_modeling/blob/master/120-data_modeling_tools/20-uml_tools.md" "Click for more information"
    click TMFSID href "https://github.com/kanad13/data_modeling/blob/master/200-domain_specific_models/10-tm_forum.md" "Click for more information"
    click GraphTools href "https://github.com/kanad13/data_modeling/blob/master/120-data_modeling_tools/30-graph_data_modeling_tools.md" "Click for more information"
    click DocumentTools href "https://github.com/kanad13/data_modeling/blob/master/120-data_modeling_tools/50-json_based_modeling_tools.md" "Click for more information"
    click RDF href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/31-resource_description_framework.md" "Click for more information"
    click RDFS href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/32-resource_description_framework_schema.md" "Click for more information"
    click OWL href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/33-web_ontology_language.md" "Click for more information"

    %% Semantic Data Modeling specifics - Deeper Level 4
    Triples["RDF Triples"]
    RDFSVocabulary["RDFS Vocabulary"]
    SHACL["SHACL - Shapes Constraint Language"]
    RDF --> Triples
    RDFS --> RDFSVocabulary
    OWL --> SHACL
    style Triples fill:#e8f5e9,stroke:#2e7d32,stroke-width:2px
    style RDFSVocabulary fill:#e8f5e9,stroke:#2e7d32,stroke-width:2px
    style SHACL fill:#e8f5e9,stroke:#2e7d32,stroke-width:2px
    click Triples href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/31-resource_description_framework.md" "Click for more information"
    click RDFSVocabulary href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/32-resource_description_framework_schema.md" "Click for more information"
    click SHACL href "https://github.com/kanad13/data_modeling/blob/master/100-data_modeling_approaches/34-shapes_constraint_language.md" "Click for more information"
```