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Dia Welcome to Dia's new homepage. Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license. Dia is roughly inspired by the commercial Windows program 'Visio,' though more geared towards informal diagrams for casual use. It can be used to draw many different kinds of diagrams. It currently has special objects to help draw entity relationship diagrams, UML diagrams, flowcharts, network diagrams, and many other diagrams. It is also possible to add support for new shapes by writing simple XML files, using a subset of SVG to draw the shape. Ingres When you’re in the business of selling applications you need to know that your database can handle the steady advances in server hardware, virtualization and cloud technologies. It also needs to be simple, fast and ultra-reliable where you can “set it and forget it”. If you’re developing applications for SMB’s, the enterprise or the cloud, and want to build in a fast, reliable and low maintenance database, send Actian an email and we can help. We designed the Actian Embeddable Database with a best-of-all-worlds approach: a single application database that includes both a high performance transactional database engine using a key-value store to store and access the data, and a relational database engine with traditional SQL access. Actian Embeddable Database powers thousands of packaged business applications for everything from accounting and medical office management to point-of-sale and ERP systems. Multi-core, Hypervisor and More

Cassandra (base de données) Un article de Wikipédia, l'encyclopédie libre. Selon , Casandra occupe la 10eme place dans le classement des systèmes de gestion de bases de données les plus populaires tout types confondus , et la deuxième place pour les systèmes de gestion de bases de données NoSQL. (en) Site officiel Microsoft SQL Server Capabilities Breakthrough, in-memory performance With SQL Server 2014, new in-memory capabilities for transaction processing and enhancements for data warehousing complement our existing technologies for data warehousing and analytics. Scale and transform your business with, on average, a 10x performance gain for transaction processing while still using existing hardware, and a greater-than 100x performance gain for data warehousing.

Berkeley DB Tell us about the features you would like to see in Berkeley DB. Take the Berkeley DB Future Feature Survey here. Download Berkeley DB and review the source code, choose your build options and then compile the library in the configuration most suitable for your needs. The Berkeley DB library is a building block that provides the complex data management features found in enterprise class databases.

MySQL Workbench 5.2 MySQL Workbench is a unified visual tool for database architects, developers, and DBAs. MySQL Workbench provides data modeling, SQL development, and comprehensive administration tools for server configuration, user administration, backup, and much more. MySQL Workbench is available on Windows, Linux and Mac OS X. Design MySQL Workbench enables a DBA, developer, or data architect to visually design, model, generate, and manage databases. It includes everything a data modeler needs for creating complex ER models, forward and reverse engineering, and also delivers key features for performing difficult change management and documentation tasks that normally require much time and effort.Learn More »

List of relational database management systems From Wikipedia, the free encyclopedia This is a list of relational database management systems. List of Software[edit] Historical[edit] Visual FoxPro Home Visual FoxPro 9.0 provides the tools you need to create and manage high-performance, 32-bit database applications and components. Note that Visual FoxPro 9.0 is the last version and was published in 2007. For a great solution for building modern business applications, take a look at LightSwitch in Visual Studio 2012 Download Visual FoxPro 9.0 SP2 Download Service Pack 2 for Microsoft Visual FoxPro 9.0.

Relational database In the relational model, each table schema must identify a column or group of columns, called the primary key, to uniquely identify each row. A relationship can then be established between each row in the table and a row in another table by creating a foreign key, a column or group of columns in one table that points to the primary key of another table. The relational model offers various levels of refinement of table organization and reorganization called database normalization. (See Normalization below.) The database management system (DBMS) of a relational database is called an RDBMS, and is the software of a relational database. Mike Hillyer's Personal Webspace - Managing Hierarchical Data in MySQL Introduction Most users at one time or another have dealt with hierarchical data in a SQL database and no doubt learned that the management of hierarchical data is not what a relational database is intended for. The tables of a relational database are not hierarchical (like XML), but are simply a flat list.

Adjacency list vs. nested sets: PostgreSQL This series of articles is inspired by numerous questions asked on the site and on Stack Overflow. What is better to store hierarchical data: nested sets model or adjacency list (parent-child) model? First, let's explain what all this means. Adjacency list

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