________   ________   ___          
               |\   __  \ |\   __  \ |\  \         
               \ \  \|\  \\ \  \|\  \\ \  \        
                \ \   ____\\ \  \\\  \\ \  \       
                 \ \  \___| \ \  \\\  \\ \  \____  
                  \ \__\     \ \_____  \\ \_______\
                   \|__|      \|___| \__\\|_______|
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                    www.processquerying.com
                                    

Process Query Language (PQL) is a special-purpose programming language for managing process models based on information about process instances that these models describe. PQL is based upon temporal logic and adopts the concrete syntax of SQL.


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SYSTEM REQUIREMENTS
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1. MySQL 5.7.8+
2. Java 7

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TESTED ENVIRONMENTS
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PQL-1.3: macOS Mojave version 10.14.1; JRE 1.8.0_144; MySQL Community server Ver 5.7.24 for MacOS
PQL-1.3: Windows 10 Education (64-bit); JRE 1.8.0_171; MySQL Ver 14.14 Distrib 5.7.24, for Win64 (x86_64)
PQL-1.2: Windows 10 Education (64-bit); JRE 1.8.0_171; MySQL Ver 14.14 Distrib 5.7.24, for Win64 (x86_64)

PQL-X.Y refers to the corresponding PQL release published at https://github.com/processquerying/PQL/tree/master/release.

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INSTALLATION INSTRUCTIONS
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1. Download latest PQL release from https://github.com/processquerying/PQL/tree/master/release.
2. Install supplied PQL.MySQL-*.sql schema file.
3. Update MySQL URL, user, and password parameters in PQL.ini.
4. Start using PQL by following the supplied examples!

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PUBLICATIONS
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1. Polyvyanyy, Artem; ter Hofstede, Arthur H. M.; Marcello, La Rosa; Ouyang, Chun; Pika, Anastasiia (2019). "Process Query Language: Design, Implementation, and Evaluation". arXiv:[1909.09543](https://arxiv.org/abs/1909.09543)

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FRIEND PROJECTS
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1. The jBPT Library (https://github.com/jbpt/codebase) provides many useful functionalities to 
   the PQL tool.
2. Apromore process model repository (https://github.com/apromore/ApromoreCode) integrates the PQL tool, 
   refer to the custom installation instructions in the README file of the Apromore project. A screencast 
   on using PQL in Apromore is available here: https://www.youtube.com/watch?v=S_U6frTWd3M.