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databases: Definition and Recommended Links

Our favorite links for this topic area. Enjoy, fellow researchers! Questions, comments, new links? Email eewindow@aol.com!.

A database is a structured collection of records or data. A computer database relies upon software to organize the storage of data. The software models the database structure in what are known as database models. The model in most common use today is the relational model. Other models such as the hierarchical model and the network model use a more explicit representation of relationships (see below for explanation of the various database models).
Database management systems (DBMS) are the software used to organize and maintain the database. These are categorized according to the database model that they support. The model tends to determine the query languages that are available to access the database. A great deal of the internal engineering of a DBMS, however, is independent of the data model, and is concerned with managing factors such as performance, concurrency, integrity, and recovery from hardware failures. In these areas there are large differences between products.
Source: Wikipedia (http://en.wikipedia.org/wiki/Database)

other great electronics sites:ee toolbox site

- databases
  - A database is a structured collection of records or data. A computer database relies upon software to organize the storage of data. The software models the database structure in what are known as database models. The model in most common use today is the relational model. Other models such as the hierarchical model and the network model use a more explicit representation of relationships (see below for explanation of the various database models).
    Database management systems (DBMS) are the software used to organize and maintain the database. These are categorized according to the database model that they support. The model tends to determine the query languages that are available to access the database. A great deal of the internal engineering of a DBMS, however, is independent of the data model, and is concerned with managing factors such as performance, concurrency, integrity, and recovery from hardware failures. In these areas there are large differences between products.
    Source: Wikipedia (http://en.wikipedia.org/wiki/Database)
    (Note: The Electronic Engineers Toolbox provides an alternative set of featured links for this word at http://www.cera2.com/database.htm)
    Featured Links:
    
    Embedded Databases, Perl.com
    The expression "Embedded Database" requires an explanation. A "database" is an application that allows the targeted retrieval of stored data -- a log-file is not a database. By "embedded" I mean a database that does not run in a separate process, but instead is directly linked ("embedded") into the application requiring access to the stored data.
    http://www.perl.com/pub/a/2004/09/12/embedded.html
    
    New Benchmark Comparison of ITTIA DB SQL and SQLite
    ITTIA, a global supplier of embedded lightweight relational database software, demonstrates its database benchmark leadership to application developers of embedded systems and devices, with exceptional results. On an ARM device, ITTIA DB SQL surpasses SQLite, an open source database, in three critical areas: insert, select, and update. ITTIA's flagship product, ITTIA DB SQL, is an industry-leading RDBMS that provides performance and...
    http://www.ittia.com/news/press/2010/mar/benchmark
    
    Raima® releases RDM Embedded 10 one of the most significant product releases since its debut in 1984
    Raima Inc., which offers state-of-the-art embedded database and dataflow technologies, today announced that they have released a new version of their popular embedded database product RDM Embedded 10. This release includes a significant re-architecture of the database engine to take advantage of multi-core processors boosting RDM Embedded's performance to new heights. In addition to the significant architectural changes to the product new...
    http://www.raima.com
    
    MetaKit
    MetaKit is an efficient embedded database library with a small footprint. It fills the gap between flat-file, relational, object-oriented, and tree-structured databases, supporting relational joins, serialization, nested structures, and instant schema evolution. There is a C++ API, a Python binding called Mk4py, and a Tcl binding called Mk4tcl. Open Source.
    http://www.equi4.com/metakit/
    
    db4objects and the Dual Licensing Model
    The dual licensing model is fast becoming one of the most popular business models for software companies leveraging the power of both open- and closed-source software development. It is important for users of software to understand how to leverage this model, without jeopardizing their intellectual property rights or risking the negative publicity that results from violating open source licenses. This white paper explains the factors...
    http://www.db4o.com
    
    Ittia Embedded Database White Papers
    * Benefits of Embedded Database * ITTIA DB for OS-9 Real-Time Operating System * Data Modeling Strategies for Embedded Database * ITTIA DB Database for uC/OS-II * Case Study: ITTIA Database Consulting – Utility Management * White Paper: Comparison of ITTIA DB and SQLite * White Paper: Database and File System on Embedded Devices * White Paper: Embedded Database for MontaVista
    http://www.ittia.com/resources
    
    News on Embedded Databases - Birdstep Discusses RDM Embedded 9.0 with a new MicroHTTP server
    Duncan Bates, Vice President of Product Management, talks with eg3.com about embedded databases, especially their new RDM Embedded 9.0 which features a new MicroHTTP server. In addition, he explains the different approaches to the embedded database market and helps interested parties sort through why a commercial embedded database may be a better solution than a do-it-yourself approach, and in addition the major differences among embedded...
    http://www.eg3.com/etc-awards/raima-20090127.htm
    
    The Database Behind the Brains
    Mobile devices, information appliances, intelligent control systems; no deep investigation is needed to uncover the spreading frontiers of computer applications that have nothing to do with desktops. These systems are usually referred to as ''embedded systems,'' but that term does not express the growing sophistication of such applications.
    http://db4o.com
    
    Building Carrier Grade Applications Using a Highly Available Database Management System
    In many areas, including the network infrastructure, developers are challenged with the task of building applications that run for very long periods without appreciable downtime. These are called highly available applications. Because they often manage large amounts of data, such applications are well-served by a high-availability database management system (HA-DBMS). This paper discusses the value of an HA-DBMS, and some key tradeoffs which...
    http://www.iec.org/online/tutorials/carrier_grd_apps/
    
    In-Memory Databases for Voice and Data Networks
    Mass acceptance of the Internet, mobile telephony, and high-speed network services has changed the way individuals communicate, necessitating a fundamental shift in the way these services are delivered. In this market, attracting and keeping customers means bringing innovative new services to market quickly, while ensuring that those services can scale to meet high volumes of subscribers reliably. In direct response to these demands,...
    http://www.iec.org/online/tutorials/in_memory/
    
    Explanation: these links are provided as part of our EE glossary project, which seeks to identify the most prominent keywords in embedded systems, embedded software, realtime and rtos, dsp (digital signal processing), system-on-a-chip, microprocessors and microcontrollers, and other constituent elements for embedded systems. While we seek to keep most of the links up-to-date, the user is refered to other primary electronic-based search sites such as: cera2.com, embedded.com, or EDN Magazine. If you have any suggestions of links or definitions, please email!

Last updated: Sat Aug 28 2010
Creator: Luis Viterbo, Web Surfer and Professional Engineer, email

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