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JDB is a package of commands for manipulating flat-ASCII databases from shell scripts. JDB is useful to process medium amounts of data (with very little data you'd do it by hand, with megabytes you might want a real database). JDB is very good at doing things like: * extracting measurements from experimental output * re-examining data to address different hypotheses * joining data from different experiments * eliminating/detecting outliers * computing statistics on data (mean, confidence intervals, histograms, correlations) * reformatting data for graphing programs Rather than hand-code scripts to do each special case, JDB provides higher-level functions. JDB is built on flat-ASCII databases. By storing data in simple text files and processing it with pipelines it is easy to experiment (in the shell) and look at the output.

PostGIS adds support for geographic objects to the PostgreSQL object-relational database. In effect, PostGIS "spatially enables" the PostgreSQL server, allowing it to be used as a backend spatial database for geographic information systems (GIS), much like ESRI's SDE or Oracle's Spatial extension. PostGIS follows the OpenGIS "Simple Features Specification for SQL" and has been certified as compliant with the "Types and Functions" profile. PostGIS development was started by Refractions Research as a project in open source spatial database technology. PostGIS is released under the GNU General Public License. PostGIS continues to be developed by a group of contributors led by a Project Steering Committee and new features continue to be added.

PostGIS adds support for geographic objects to the PostgreSQL object-relational database. In effect, PostGIS "spatially enables" the PostgreSQL server, allowing it to be used as a backend spatial database for geographic information systems (GIS), much like ESRI's SDE or Oracle's Spatial extension. PostGIS follows the OpenGIS "Simple Features Specification for SQL" and has been certified as compliant with the "Types and Functions" profile. PostGIS development was started by Refractions Research as a project in open source spatial database technology. PostGIS is released under the GNU General Public License. PostGIS continues to be developed by a group of contributors led by a Project Steering Committee and new features continue to be added.

PostGIS adds support for geographic objects to the PostgreSQL object-relational database. In effect, PostGIS "spatially enables" the PostgreSQL server, allowing it to be used as a backend spatial database for geographic information systems (GIS), much like ESRI's SDE or Oracle's Spatial extension. PostGIS follows the OpenGIS "Simple Features Specification for SQL" and has been certified as compliant with the "Types and Functions" profile. PostGIS development was started by Refractions Research as a project in open source spatial database technology. PostGIS is released under the GNU General Public License. PostGIS continues to be developed by a group of contributors led by a Project Steering Committee and new features continue to be added.

This module is the Sybase extensions to Ruby.

The purpose of DO.rb is to rewrite existing Ruby database drivers to conform to a single interface. At present, PostgreSQL, MySQL, and SQLite adapters are available.

The sql package adds the command sql to tcl. The author's intention is to build generic database interface for TCL, but currently he only supports MySQL. The author's web-site is:

pyPgSQL is a package of two modules that provide a Python DB-API 2.0 compliant interface to PostgreSQL databases. The first module, libpq, exports the PostgreSQL C API to Python. This module is written in C and can be compiled into Python or can be dynamically loaded on demand. The second module, PgSQL, provides the DB-API 2.0 compliant interface and support for various PostgreSQL data types, such as INT8, NUMERIC, MONEY, BOOL, ARRAYS, etc. This module is written in Python. developed by Bill Allie et al

DB Browser for SQLite is a light GUI editor for SQLite databases, built on top of Qt. The main goal of the project is to allow non-technical users to create, modify and edit SQLite databases using a set of wizards and a spreadsheet-like interface. This project has previous been known as "SQLite Browser" and "Database Browser for SQLite". "DB Browser for SQLite" will hopefully be the name that sticks. :)

DBConnect (Database Connect) API is an easy to use C++ object API to allow applications to connect to databases. Your DB applications can now become cross platform and cross databased. The API currently implements MySQL, Oracle8 and PostGreSQL drivers in the Unix environments and MySQL, Oracle8 and ODBC in the Windows environment.