Crystallographic Information Framework

Db Loader (mmCIF Loader)


The Db Loader application (formerly known as mmCIF Loader) is a tool that converts CIF data into a form that is loadable into a variety of relational database engines (MySQL, Oracle, Sybase and DB2). The tool produces all of the necessary SQL and auxiliary configuration files to create and load tables in the relational database. The mapping of information between mmCIF data files and the relational schema is controlled by a versatile configuration file. Many relational schemas can be supported for any particular mmCIF data representation. This tool will also produce XML equivalent to any mapped relational schema.


If you wish to install and use this software you should download the most up-to-date version from the above Web site. The links below are to copies which are suitable for browsing or for use if the primary Web site is not available. However, they may be out of date and lack the full functionality of the latest version.


Db Loader is distributed from the Rutgers site of the Research Collaboratory for Structural Bioinformatics (RCSB) and forms an important component of the software systems used in the Protein Data Bank. Comments should be directed to

Language and platform

The software is written in C++ and should run on versions of Unix with suitable C++ compilers.


  • Installation: For Unix-type installations, copy the gzipped tar file db-loader-v4.017-prod-src.tar.gz into an empty directory; ungzip and extract files using the Unix tar utility. Build the db-loader binary using the make utility:
     cp db-loader-v4.017-prod-src.tar.Z /g/h/i; cd /g/h/i
    gunzip db-loader-v4.017-prod-src.tar.Z; tar xvf db-loader-v4.017-prod-src.tar
    cd db-loader-v4.017-prod-src
    If gzip or tar are unavailable, individual source files may be saved to the build directory.
    For more details see the Installation Notes
  • Documentation
  • Usage examples

Terms and conditions of use

Copyright in the software © Rutgers - The State University of New Jersey
Authors: Olivera Tosic and John Westbrook

The software is distributed here under licence from the Protein Data Bank/RCSB. Use of the software is governed by the PDB software licence. Queries concerning any other use should be directed to