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Version: 2.8

1 Introduction​

QVD Utils enables reading/writing QVD files without a need to use Qlik Sense or QlikView. Also provides metadata from QVD/QVX header. It is useful when you need to convert various sources directly to/from a QVD file and you don’t want to overload your Qlik server by processing many, or large, QVD files.

1.1 QVD Utils used standalone​

../images/QVD-Utils/QVD-Utils-standalone

Having QVD Utils without any other EVL Microservice contain these scripts:

  • csv2evd – generate EVL data definition file (EVD file) based on CSV
  • csv2qvd – convert CSV to QVD
  • qvd2csv – convert QVD to CSV
  • qvd2evd – generate EVL data definition file (EVD file) based on QVD
  • qvd-header – get information from QVD header, like field names as JSON, or number of records

1.2 QVD Utils in combination with other Microservices​

../images/QVD-Utils/QVD-Utils-combinations

In join with other EVL Microservices, like Hadoop Utils or EVL Data Hub, you can also read/write:

  • various file formats: Avro, json, Parquet, xlsx, and xml,
  • database tables: MySQL, PostgreSQL, Oracle, SQLite, Teradata, or any other by ODBC.

1.3 QVD Utils with EVL Tool​

Together with EVL Tool (an ETL tool) it can be used for example in QVD-based architecture:

../images/QVD-Utils/QVD-based_Architecture