Deductive Database with Datalog, RA, TRC, DRC and SQL
The Datalog Educational System (DES) is a deductive database with Datalog, SQL, Relational Algebra, Tuple Relational Calculus and Domain Relational Calculus as query languages developed mainly for education. It can be used from most common Prolog interpreters over any supported OS and from portable executables (Windows, Linux and MacOS).
Flat-file SQL (fSQL) is a set of classes available in PHP that allows users without SQL database servers to select and manipulate flat-file data using SQL queries. fSQL is designed to support as many SQL queries and features as it can.
Intellect Modeling Kit - full intellect-based apps development suite
Intellect Modeling Kit is an alternative to traditional Artificial Intelligence, intended to build apps assisting human intellect on the steps of its activity: * Observation * Producing propositions based on knowledge * Elimination of impossible propositions * Selection and verification of the most appropriate propositions * Memorizing - converting data to information and new knowledge item creation * Abstraction finding – building artificial objects, representing group of real objects featuring typical signs of group Any human knowledge written and spoken can be uploaded to IMK in a straight way by any expert not familiar with software coding. The IMK components are designed to create ready-to-use software application using simple text files provided by people. IMK accepts human knowledge and develops new knowledge together with people. The activity of IMK could be verified by human expert on every stage. IMK assists intellectual activity, but does not replace us.
A library for file based AVL tree implementation.
avl_file is a library for file-based threaded AVL-trees (height balanced binary trees) with multiple keys and concurrent access, using fixed length records in single files.
Tag based file manager CLI
A Tag based file management system. Command line interface. User can add tags for files (individually or for the folder). Allows search by tags.
RAQUEL : "Relational Algebra Query, Update and Executive Language"
The project has 2 related sets of aims. As a language, RAQUEL is to : 1. be a pure relational language (unlike SQL) as defined by Date & Darwen's "The Third Manifesto"; 2. incorporate a generalised extension of the ANSI-SPARC 3-layer DB architecture; 3. have the maximum ratio of functionality to conceptual complexity (as defined by Fred Brooks). As a DBMS, RAQUEL is to : 1. have an Open Architecture, enabling a variety of DBMS configurations of 'black box' code, each installation optimised for a certain kind of DB; 2. have a range of core black boxes to provide general DBMS functionality, & a range of plug-in black boxes to support different physical storage mechanisms & scalar data types; 3. employ code designed with a mixture of functional, OO & other methods so as to minimise internal DBMS state complexity. The project links to a Northumbria University website where the vision, specification & design of RAQUEL have been published.
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).
on-disk memory library using meta-data
meta-treedb can implement malloc functionality, and much more! Need a heap that allocates of a fixed size chunk of memory? No problem. But where treedb comes into its own is when it comes to allocating from a mmap()ed disk file - the memory becomes persistent. If you follow the tests/examples, you too can store dictionaries, trees, lists or whatever you can think of in disk-based memory, just an open() and mmap() away. Meta-treedb comes with an AVL tree, doubly-linked-list and variable-entry-sized-array implementations for you to use in your data structures. So, what distinguishes meta-treedb from treedb? * "class" interfaces for treedb collections These are vtables (virtual function tables) that implement th interface. * faster compiles - only the "class" interfaces are visible to client code This is at the expense of a small performance hit. * the ability to use implementations that were developed after client code was compiled.
An experimental CEP (Complex Event Processing) engine. It implements the event stream processing as a library embeddable in C++ and Perl. Since then it has been renamed to Triceps, so please look at the new location https://sourceforge.net/projects/t
FLEISS Frameworks is a set of programming, instrumental, application, and system frameworks to develop a free software system within an organization either non-commercial or commercial, but primarily scoping on business organizations.
Fractus - this is a simple script which implements a database, writ
GSN is a middleware (extendible software infrastructure) for rapid deployment and integration of heterogeneous wireless sensor networks. It is tested with Mica2, Mica2Dot, TinyNodes, Wisenode ,Wired & Wireless cameras, several RFID readers,...
LoXiM is an object oriented, semistructural DBMS with a modern query language - Stack Based Querty Language (SBQL). It is a research project for inventing, testing and implementing an efficient, modern DBMS developed at Warsaw University.
An append only database manager in the style of dbm. It has both a C and a Python interface and is ACID compliant. Internally it uses an immutable B+ Tree. (Being append only doesn't mean that you can't replace records or delete keys).
shared memory object server database
hippocampus is a reflexion on the pertinence of developping a shared memory, object oriented, dynamic and reflexive language interpreter. The idea behind this confusing words is to have a python's like environment able to share objects across multiple processes, removing the GIL but restrincting the use of this environment to data manipulation. The motivation is to avoid all the ORM configuration, SQL manipulation and objects replications needed when using an rdbms. I want to implementation the engine with C as it is a commonly known language and it has a good support of the linux's shared memory. I have already done an encouraging poc with C and mmap.
A Database Management System which is entirely implemented in Java.