Open Source Perl Database Management Systems (DBMS)

ldif-extract is a small 'grep' like tool to extract and convert data from LDIF files. It could be used standalone or also in a pipe together with other tools like ldapsearch.

ldap-searchEntries.pl is a small perl script that searches for entries based on a list provided by STDIN. The values given from STDIN are parsed into a filterstring containing placeholders. The found DNs are printed to STDOUT for each search. Parameters allow fine tuning of all features including attribute printing.

This program allows you to easily collate and count entries by selecting an attribute. Entries are searched and then grouped by attribute occurrence, which is then printed as result.

Replace, add and delete values of LDAP attributes online with regular expressions. Automate daunting data maintenance Tasks. Save yourself from the need to fiddle around with LDIF Change files (or create them based on the replacement result)!

The Logging of User Actions in Relational Mode (LUARM) is a logging/audit engine designed to record in detail user actions in a Relational Database Management System (RDBMS). You can then have an organized 'who is doing what' view in your system, being able to easily correlate program execution, file access and network endpoint activity to user entities.

QDepo - A desktop application for retrieving and exporting data from relational database systems to spreadsheet files, also formerly known as "TPDA - Query Repository Tool". The graphical user interface is based on wxPerl or PerlTk. The main feature of the application is the SQL query repository management. The repository consists from a collection of XML files that ca easily be moved or copied to other computers. The supported formats are Excel (.xls), ODF and CSV. The Database management system support includes CUBRID (new), Firebird, MySQL, PostgreSQL and SQLite.

File Based DBMS & ETL Tool: OpenSQL is a file based database management system which uses SQL like features to accept the query request and return the query response. In later phase of this project, ETL based features will be added.

TreeBASE is a database and web front end that stores phylogenetic trees and the data matrices used to generate them. The current iteration comprises a complete rewrite of the schema and web layer, and will include a web services layer.

An innovative Open Source CEP (Complex Event Processing) engine. It implements the event stream processing as a library embeddable in C++ and Perl. You can think of the Complex Event Processing engine as an in-memory database driven by triggers, or a data-flow machine, or a spreadsheet on steroids (and without the GUI part).

WODA is a semi-relational database for beginners to work on data and to learn database basis. With web-based GUI and CLI. Currently in rewrite using Bootstrap for web UI. Built with beginners in mind, it is far easier than any other tool I know, while remaining powerful for advanced users (Perl langage is directly available). Databases can be defined, maintained, added-to, modified, and queried entirely through the web interface without programming. It comes from the 90's and thus is very low in computer resources. Žiga Turk, Woda original author, is also the creator of the famous Virtual Shareware Library (that later evolved into shareware.com) and the former Minister for Education, Science, Culture and Sports in the Government of Slovenia.

An attempt at creating a music database management system, with pluggable backends and frontends. The system should incorperate, as a base, a file system/meta data file data store, cd extraction, and a web/daap frontend to listen to music.

openADAM is a web-based database management system for the large amount of genotype data generated from the Affymetrix GeneChip® Mapping Array and Genome-Wide Human SNP Array platforms

ConDB is a Convention Database Management system built over several years for running a science-fiction/fantasy convention. It is written in perl against MySQL, runs under CGI or mod_perl, and has been used sucessfully at multiple conventions.

WebPAF is a web-based, collaborative genealogy database management system. With webPAF running on your server you and your fellow researchers (whom you have given a password) can access and interact with your genealogy data from any browser.