• M2Bench is a new benchmark program capable of evaluating a multi-model DBMS.
• M2Bench supports several important data models including relational, document-oriented, property graph and array models.
• M2Bench consists of multi-model workloads that are inspired by real-world problems.
• Each task of the workloads mimics a real-world problem that involves at least two different models of data.

• If you need a support during reproducing this work, feel free to contact us.
• We highly recommend to use the described versions of software with Ubuntu 18.04 that we used for the publication.

DBMS versions used for the experiment in the paper are as follows.

• Polyglot: MySQL 8.0.25, MongoDB 4.2.6, Neo4j 4.0.3, and SciDB 19.11.5.
• ArangoDB 3.7.12
• AgensGraph 2.1.3 (based on PostgreSQL 10.4)

For SciDB installation, please refer to the description for Polyglot (Impl/Polyglot/README.md).

Each data generator, data scaler, and client program of Polyglot needs different prerequisites to run them. For such dependencies, we will describe those in a description of each part.

In order to run M2Bench, please follow the below steps.

1. Generate datasets of M2Bench following the instructions in Datasets/README.md.
2. Choose one of Polyglot, AgensGraph, and ArangoDB. Refer to the chosen DBMS as X.
3. Load the datasets into DBMS X and run tasks, following the instructions in Impl/X/README.md.

• All datasets in M2Bench are explained in the Datasets folder.
• Data loading scripts and query implementations are stored in the Impl directory.
• All tasks in M2Bench are explained in the /Tasks/alltasks.md file.

m2bench
├── Datasets
│   ├── ecommerce           # Generated e-commerce data
│   ├── healthcare          # Generated healthcare data
│   ├── disaster            # Generated disaster & safety data
│   ├── DataScaler          # Data scaler
│   ├── Generator           # Data generator        
│   └── README.md           # How to generate the datasets of M2Bench from the realworld datasets.
├── Tasks                   
|   └── alltasks.md         # Description of all tasks of M2Bench
├── Impl                    # Implementation of tasks of M2Bench on various DBMSs
│   ├── agensgraph  
│   │   ├── load_datasets   # How to load datasets into DBMS
│   │   └── run_tasks       # How to run tasks
│   ├── arangodb
│   │   ├── load_datasets 
│   │   └── run_tasks
│   └── polyglot            # polyglot persistence
│       ├── load_datasets
│       └── run_tasks
├── README.md
└── LICENSE