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Benchmarking ETL Workflows [chapter]

Alkis Simitsis, Panos Vassiliadis, Umeshwar Dayal, Anastasios Karagiannis, Vasiliki Tziovara
2009 Lecture Notes in Computer Science  
Each ETL tool uses its own technique for the design and implementation of an ETL workflow, making the task of assessing ETL tools extremely difficult.  ...  In this paper, we identify common characteristics of ETL workflows in an effort of proposing a unified evaluation method for ETL.  ...  Finally, we discuss the characteristics of ETL execution and we tie them to the goals of the proposed benchmark. ETL workflows An ETL workflow is a design blueprint for the ETL process.  ... 
doi:10.1007/978-3-642-10424-4_15 fatcat:mzyiwt6iwbgghkpsbgxhp7yo2y

Frequent patterns in ETL workflows: An empirical approach

Vasileios Theodorou, Alberto Abelló, Maik Thiele, Wolfgang Lehner
2017 Data & Knowledge Engineering  
We logically model the ETL workflows using labeled graphs and employ graph algorithms to identify candidate patterns and to recognize them on different workflows.  ...  We showcase our approach through a use case that is applied on implemented ETL processes from the TPC-DI specification and we present mined ETL patterns.  ...  However, according to our experience with implementing ETL workflows from the TPC-DI benchmark, this is hardly a realistic case for ETL graphs, where the branching factor is close to 1.  ... 
doi:10.1016/j.datak.2017.08.004 fatcat:nwlx3pjbz5g67fjpicktv2nnfm

A Survey of Extract–Transform–Load Technology

Panos Vassiliadis
2009 International Journal of Data Warehousing and Mining  
The intention of this survey is to present the research work in the field of ETL technology in a structured way.  ...  The software processes that facilitate the original loading and the periodic refreshment of the data warehouse contents are commonly known as Extraction-Transformation-Loading (ETL) processes.  ...  First, we discuss the problems of optimization and resumption of entire ETL workflows. Second, we visit the practical problem of the lack of a reference benchmark for ETL processes.  ... 
doi:10.4018/jdwm.2009070101 fatcat:okcajnbvabhe5fx72svcdkwrzu

Scheduling strategies for efficient ETL execution

Anastasios Karagiannis, Panos Vassiliadis, Alkis Simitsis
2013 Information Systems  
Extract-transform-load (ETL) workflows model the population of enterprise data warehouses with information gathered from a large variety of heterogeneous data sources.  ...  ETL workflows are complex design structures that run under strict performance requirements and their optimization is crucial for satisfying business objectives.  ...  Archetype ETL patterns We have experimented with a set of ETL workflows described in a benchmark comprising characteristic cases of ETL workflows [18] .  ... 
doi:10.1016/ fatcat:nj7muti2u5gwnhmc6zxv54rkty

Workflow management for ETL development

Aaron W. Smith, Nayem Rahman, Jacob J. Schmitt
2013 Journal of Decision Systems  
Many of the ETL products in the market today provide tools for design of ETL workflows, with very little or no support for optimization of such workflows.  ...  Optimization of ETL workflows pose several new challenges compared to traditional query optimization in database systems.  ...  The set of workflows used for the experiments were a representative set of 30 workflows, motivated from a draft version of TPC-DI benchmark being prepared for benchmarking ETL workflows.  ... 
doi:10.1080/12460125.2013.829961 fatcat:3ax4pmev6zfvnn7lr7q4yj2ggu

ETL Workflow Analysis and Verification Using Backwards Constraint Propagation [chapter]

Jie Liu, Senlin Liang, Dan Ye, Jun Wei, Tao Huang
2009 Lecture Notes in Computer Science  
Although ETL workflows can be designed by ETL tools, data exceptions are largely left to human analysis and handled inadequately.  ...  Early detection of exceptions helps to improve the stability and efficiency of ETL workflows.  ...  Future work includes extending the approach to support more complete ETL operations, implementing it completely in our ETL tool OnceDI, and run more extensive benchmarks.  ... 
doi:10.1007/978-3-642-02144-2_36 fatcat:3zz2cunqkvbbrer66pildxrlpq

From conceptual design to performance optimization of ETL workflows: current state of research and open problems

Syed Muhammad Fawad Ali, Robert Wrembel
2017 The VLDB journal  
In this paper, we discuss the state of the art and current trends in designing and optimizing ETL workflows.  ...  We explain the existing techniques for: (1) constructing a conceptual and a logical model of an ETL workflow, (2) its corresponding physical implementation, and (3) its optimization, illustrated by examples  ...  ETL developer designing an efficient ETL workflow, by providing hints for optimizing the workflow, and (2) allow the ETL developer to validate and benchmark some alternative workflow designs for given  ... 
doi:10.1007/s00778-017-0477-2 fatcat:s5f7mzuzgfhzfkvl26yxixw2vy

Parallelizing user–defined functions in the ETL workflow using orchestration style sheets

Syed Muhammad Fawad Ali, Johannes Mey, Maik Thiele
2019 International Journal of Applied Mathematics and Computer Science  
., by parallelism, and for this reason, it performs poorly for data-intensive ETL workflows.  ...  Today's ETL tools provide capabilities to develop custom code as user-defined functions (UDFs) to extend the expressiveness of the standard ETL operators.  ...  an overall ETL workflow.  ... 
doi:10.2478/amcs-2019-0005 fatcat:4be3vp5b6bctfm5dyb6xrhooju

Deciding the physical implementation of ETL workflows

Vasiliki Tziovara, Panos Vassiliadis, Alkis Simitsis
2007 Proceedings of the ACM tenth international workshop on Data warehousing and OLAP - DOLAP '07  
In this paper, we deal with the problem of determining the best possible physical implementation of an ETL workflow, given its logical-level description and an appropriate cost model as inputs.  ...  We further extend this technique by intentionally introducing sorter activities in the workflow in order to search for alternative physical implementations with lower cost.  ...  However, as far as we are aware of, in the literature and practice there is a lack of standard benchmark or experimental setup for ETL workflows.  ... 
doi:10.1145/1317331.1317341 dblp:conf/dolap/TziovaraVS07 fatcat:ljnyn233g5cdhptah5rqmmbhae

A taxonomy of ETL activities

Panos Vassiliadis, Alkis Simitsis, Eftychia Baikousi
2009 Proceeding of the ACM twelfth international workshop on Data warehousing and OLAP - DOLAP '09  
However, each one of them follows a different approach for the modeling of ETL activities; i.e., of the building blocks of an ETL workflow.  ...  Finally, we show how the proposed taxonomy can be used in the construction of larger modules, i.e., ETL archetype patterns, which can be used for the composition and optimization of ETL workflows.  ...  for the purpose of benchmarking ETL as well [ 14, 21] .  ... 
doi:10.1145/1651291.1651297 dblp:conf/dolap/VassiliadisSB09 fatcat:scr4tns4bzeudd7qeaghfrkgre

Elastic Performance For ETL+Q Processing

Pedro Martins, Maryam Abbasi
2016 International Journal of Database Management Systems  
The majority of current ETL tools organize such operations as a workflow.  ...  time and the allocated memory needed for a given ETL workflow.  ... 
doi:10.5121/ijdms.2016.8102 fatcat:cx6l6gbanvhc7as2diwoxelxa4

Extraction, Transformation, and Loading [chapter]

Alkis Simitsis, Panos Vassiliadis
2017 Encyclopedia of Database Systems  
SYNONYMS ETL; ETL process; ETL tool; Back Stage of a Data Warehouse; Data warehouse refreshment DEFINITION Extraction, Transformation, and Loading (ETL) processes are responsible for the operations taking  ...  HISTORICAL BACKGROUND Despite the fact that ETL took its name and separate existence during the first decade of the 21st century, ETL processes have been a companion to database technology for a lengthier  ...  activities of the ETL workflows is striking.  ... 
doi:10.1007/978-1-4899-7993-3_158-3 fatcat:etto3enuuneind3s3ldeg4s5qy

Jadex: A Generic Programming Model and One-Stop-Shop Middleware for Distributed Systems

Alexander Pokahr, Lars Braubach, Kai Jander
2013 PIK - Praxis der Informationsverarbeitung und Kommunikation  
The product, called DiMaProFi (Distributed Management of Processes and Files) will allow for defining and executing distributed ETL (extract, transform, load) workflows that are used to process and transport  ...  This is e.g. a powerful tool for testing applications or benchmarking alternative implementations of application functionality.  ... 
doi:10.1515/pik-2013-0012 fatcat:5xcdoutstjfdbcdik5222p5yqy

Guildlines of Data Quality Issues for Data Integration in the Context of the TPC-DI Benchmark

Qishan Yang, Mouzhi Ge, Markus Helfert
2017 Proceedings of the 19th International Conference on Enterprise Information Systems  
Hence, DI benchmark plays an vital role to evaluate ETL tools when there are several ETL candidates to choose.  ...  Afterwards the ETL will be carried out to import the data to data warehouse. The outline of whole data integration workflow is depicted in figure 1 .  ... 
doi:10.5220/0006334301350144 dblp:conf/iceis/YangGH17 fatcat:wyqsdu6swjc5foodhhaks5jf4i

Chameleon: A Semi-AutoML framework targeting quick and scalable development and deployment of production-ready ML systems for SMEs [article]

Johannes Otterbach, Thomas Wollmann
2021 arXiv   pre-print
This is due to a high entry barrier of building and maintaining a dedicated IT team as well as the difficulties of real-world data (RWD) compared to standard benchmark data.  ...  The goal of Chameleon is fast and scalable development and deployment of production-ready machine learning systems into the workflow of SMEs. We first discuss the RWD challenges faced by SMEs.  ...  We chose to separate the Extract-Transform-Load (ETL) stages from the training and inference stage of the pipeline.  ... 
arXiv:2105.03669v1 fatcat:4zrkui5qtnc5xl6zl3bswrr7qa
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