Database Categories:

SQL Databases:

The redoubtable Christopher Browne has comprehensive pages on Linux databases as well as on practically anything else you want to know about Linux software:



Many organizations from large corporations, to government institutions, to small online businesses have implemented PostgreSQL to handle their most valuable data and mission critical applications.

Join the PostgreSQL revolution, and take advantage of:

With a 16-year development history, one of the strongest development communities in the world, and a global reputation for high quality software engineering, PostgreSQL gets the job done and with no hassles.


The MySQL database server is the world's most popular open source database. Its architecture makes it extremely fast and easy to customize. Extensive reuse of code within the software and a minimalistic approach to producing functionally-rich features has resulted in a database management system unmatched in speed, compactness, stability and ease of deployment. The unique separation of the core server from the table handler makes it possible to run with strict transaction control or with ultra-fast transactionless disk access, whichever is most appropriate for the situation.

The MySQL database server is available for free under the GNU General Public License (GPL). Commercial licenses are available for users who prefer not to be restricted by the terms of the GPL.


SAP DB is a mature and reliable database system that combines extremely high levels of performance and availability with a low cost of ownership. It offers absolute ease of use and almost unsupervised operation. SAP DB can handle a wide range of different types of information, which makes it a suitable server for diverse application scenarios.

SAP DB works with all SAP applications. Newer SAP solutions, such as mySAP Supply Chain Management (Advanced Planner and Optimizer) and mySAP Product Lifecycle Management, use SAP DB exclusively as an integrated database engine for managing complex objects, or as a content server for structured documents. And it is not only SAP customers who can use SAP DB free of charge at the end of 2000, SAP released its SAP DB database technology as an open source package, available to the open source community on all supported platforms at no charge.

Note: SAP DB is what was for a very long time the proprietary SQL database "ADABAS D" from Software AG. However, ERP house SAP AG bought that product (which was one of the databases underlying the SAP R/3 ERP system), changed its name to SAP DB, and transformed it to open source under the GNU GPL. Also, in mid-2003, SAP AG announced an agreement with MySQL AB to market and sell SAP DB on its behalf. At that time, MySQL AB announced the renaming of the product yet again, to MaxDB.


MaxDB by MySQL is a re-branded and enhanced version of SAP DB, SAP AG's open source database [which in turn is what used to be called ADABAS D]. MaxDB is a heavy-duty, SAP-certified open source database that offers high availability, scalability and a comprehensive feature set. MaxDB complements the MySQL database server, targetted for large mySAP ERP environments and other applications that require maximum enterprise-level database functionality.

MaxDB is available for free under the GNU General Public License (GPL). Commercial licenses are available for users who prefer not to be restricted by the terms of the GPL.


Firebird is a relational database offering many ANSI SQL-92 features that runs on Linux, Windows, and a variety of Unix platforms. Firebird offers excellent concurrency, high performance, and powerful language support for stored procedures and triggers. It has been used in production systems, under a variety of names since 1981.

Firebird is a commercially independent project of C and C++ programmers, technical advisors and supporters developing and enhancing a multi-platform relational database management system based on the source code released by Inprise Corp (now known as Borland Software Corp) under the InterBase Public License v.1.0 on 25 July, 2000.


SQLite is a C library that implements an embeddable SQL database engine. Programs that link with the SQLite library can have SQL database access without running a separate RDBMS process. The distribution comes with a standalone command-line access program (sqlite) that can be used to administer an SQLite database and which serves as an example of how to use the SQLite library.

SQLite is not a client library used to connect to a big database server. SQLite is the server. The SQLite library reads and writes directly to and from the database files on disk.


Gadfly is a collection of python modules that provides relational database functionality entirely implemented in Python. It supports a subset of the intergalactic standard RDBMS Structured Query Language SQL.

One of the most compelling aspects of Gadfly is that it runs whereever Python runs and supports client/server on any platform that supports the standard Python socket interface. Even the file formats used by Gadfly for storage are cross-platform -- a gadfly database directory can be moved from Win95 to Linux using a binary copying mechanism and gadfly will read and run the database.

It supports persistent databases consisting of a collection of structured tables with indices, and a large subset of SQL for accessing and modifying those tables. It supports a log based recovery protocol which allows committed operations of a database to be recovered even if the database was not shut down in a proper manner (ie, in the event of a CPU or software crash, [but not in the event of a disk crash]). It also supports a TCP/IP Client/Server mode where remote clients can access a Gadfly database over a TCP/IP network (such as the Internet) subject to configurable security mechanisms.

Because it lacks (at this time) true concurrency control, and file-system based indexing it is not appropriate for very large multiprocess transaction based systems.


LEAP is a relational database management system (RDBMS). LEAP supports relations, has a query language by which information can be extracted from the relations, and has a support environment for users querying the data. At such a basic level, LEAP is just like the large, complex, mission critical RDBMS offerings from Sybase, Oracle and IBM. Clearly, however, it isn't as powerful as these heavyweight offerings. LEAP is different in the sense that it was originally written as an educational tool by a student.

The query language makes LEAP what it is. It is a full implementation of the relational algebra, which is the theoretical basis for far more advanced query languages such as SQL. When studying database theory, students will generally encounter the relational algebra along with the relational calculus as means by which the behavioural component of the relational model can be implemented.

The implementation of the algebra used in LEAP is very similair to that used by many of the popular educational texts on Databases, notably: C.J.Date's "An introduction to database systems"; and S.Stanczyk's "Theory and Practice of Relational Databases". A sample session from LEAP, which uses examples from these texts, is available.

LEAP has been incorporated into courses at a number of Universities around the world. In providing students with a tool by which they can experiment with the relational algebra, a course that can otherwise be rather lacking in practical exercies, can be made far more interesting. Further information can be found in the on-line version of the user manual. Of course the user manual is included in the standard distribution which can be downloaded.


A Database Engine with features as:


HSQLDB is an open-source, small, fast SQL database written in Java, derived from Thomas Mueller's earlier (now-unmaintained) Hypersonic SQL. It supports most of ANSI-92 SQL plus SQL 99 and 2003 enhancements. Embedded and server modes are available. Additionally, it includes tools such as a minimal Web server, in-memory query and management tools (can be run as applets), and a number of demonstration examples. There is 95% JDBC interface support with full metadata and batch statement functionality.

The HSQLDB pages are sadly uniformative about this point, but fortunately for the open-source world, HSQLDB functions perfectly on the all-GPL "Kaffe" Java runtime engine ("JRE"). It does not, as the Web pages would lead you to believe, require Sun Microsystems's proprietary J2EE v. 1.4 (or later) JDK, or earlier versions of the same proprietary JDK if recompiled.

Note: Kaffe is used as the Java runtime in FSF's "gcj" architecture. Therefore, unlike the general run of Java codebases, HDSLDB will run without a hitch on just about any Linux distribution, without separately installed proprietary add-ons.


Borland InterBase 7.5 raises the bar for performance and power in small footprint databases. Designed for use in situations where there is no database administrator or IT support, InterBase is powerful enough to support mission-critical applications, yet compact enough to run on very modest systems. It can be easily transported by disk, CD, or even dial-up download. And unlike enterprise databases that require expensive ecosystems of support and maintenance, InterBase requires virtually no maintenance.

Empress RDBMS

Re: Applix and Red Hat Software Announce Applixware for Red Hat Linux
From: Donnie Barnes (
Date: Tue, 21 May 1996 01:15:40 -0400

> No database???
> I need database that can work with web dynamically.
> Oracle is too expensive :)

Not to sound crass, but buy one of the many commercially available
databases already out there. Empress comes to mind, and they have a Web
kit available already. They are also a ton cheaper than Oracle, and a
darned good value considering how powerful it is. Also, since it's SQL
based, you can use Applixware to build a client side interface to your
database. Handy, eh? Don't need Applix? Use the 4GL GUI builder that
comes with Empress to do your client side. Only need a web client? Use
the optional Web kit.

See for more details...

No, we're not really pushing them, but it is a good solution. There are
others, and I welcome those using the other solutions that work under
Linux to point those out as well. Linux is not database poor by any could also use mSQL alongside Applixware pretty nicely, I'd


Oracle RDBMS

Oracle Database on Linux

With the performance and reliability of Oracle Database on Linux, you can standardize your IT infrastructure on low cost Linux-based systems. And with Oracle Real Application Clusters, you can scale out to meet demands on the fly.[...]

DB2 Universal Database

DB2 UDB for Linux is:


Adabas is Software AG's advanced database management system that delivers high transaction throughput while ensuring integrity and flexibility.

High performance

How does Adabas achieve its legendary high performance? By combining highly sophisticated search and storage algorithms with the appropriate database design. As a result, you can choose to use a strictly relational structure or make use of the nested structures.

Low disk consumption

Built-in compression mechanisms ensure optimum usage of disk space; by automatically compressing user data as well as index structures. This not only improves disk space usage, it boosts performance. After all, the more characters that can be read with one physical I/O, the lower the number of I/Os and the faster the response times.

Flexible access

One of Adabas's most popular features is the fact that it can be accessed from any development environment. These include Cobol, Java and through SQL applications using standard interfaces such as ODBC or JDBC. In addition, Software AG's development environment, Natural, offers user-friendly access methods.

Special requirements

A suite of add-on products offers support for your data management requirements. A few examples include:

Low cost of ownership

Many factors influence the costs of database operations. They include:

High development productivity

The tight integration of Adabas with Natural, Software AG's 4GL development environment, ensures maximum development productivity. Natural includes very convenient, easy-to-learn statements for retrieving and updating data stored in Adabas.

(As you'll see from consulting other entries, Software AG sold ADABAS to SAP AB, which open-sourced it under the GNU GPL, and renamed it to SAP DB. Later (mid-2003), SAP DB sublicensed the product to MySQL AB, which renamed it yet again, to MaxDB.)


/rdb from Revolutionary Software

The Unix shell as a 4GL

Unix provides hundreds of programs that can be piped together to easily perform almost any function imaginable. Nothing comes close to providing the functions that come standard with Unix. Programs and philosophies carried over from other systems put walls between the user and Unix, and the power of Unix is thrown away. The shell, extended with a few relational operators, is the fourth generation database scripting language most appropriate to the Unix environment. /rdb is a high-performance relational database management and application development system designed for Unix and implemented as a suite of 131 shell level commands.

Unlike other fourth generation systems, /rdb is an extension of the Unix environment, making available the full power of Unix during application development and usage. Database utilities such as sorttable, jointable, row, column and compute are programs invoked by the shell which read tables from the standard input and write tables to the standard output. All of the relational operators are included, as well as several indexing methods, a vi-like forms editor, a powerful report generator, menus, and a number of data transformation utilities, including all the math library functions. /rdb stores tables in efficient variable length ASCII files, making them accessible to ordinary Unix commands.

A most exciting aspect of this pipeline paradigm is its inherent parallelism: without change, /rdb applications enjoy efficiencies that grow almost linearly with the number of processors in SMP systems.

/rdb means freedom from the software prisons created by proprietary interfaces that require learning yet another language or way of thinking.


Ingres is a mature, high-performance relational database solution. It offers scalability, integration and flexibility to leverage information resources across a wide range of platforms, including Linux, UNIX, Windows and OpenVMS. Reliable and cost effective, it supports mission-critical applications in small to medium-size businesses and high-volume deployments in large scale enterprises.

We are pleased to announce that following rigorous testing by the Ingres Community, Ingres r3 for Linux and Windows are now ready for production use.

CA and Ingres

As a cornerstone of CA's open source strategy, Ingres has been released into open source under the CA Trusted Open Source License (CATOSL). CA is committed to building a strong, vibrant community for Ingres and is working with partners, ISVs and the open source community to rapidly grow the use of Ingres. Internally, Ingres has become the standard database for CA products and ships bundled today with many CA solutions.


Mini SQL is our light-weight SQL Database engine technology. First developed in 1994, the release of mSQL 3 marks the third generation of the software. The generation 3 series provides new features that make mSQL even more suited to both large scale applications and resource constrained embedded environments.

The second generation of our database technology has been incorporated into products from companies such as HP, Cisco, Tandem, Cray, EDS, TRW and Real Networks. We can't wait to see how people will use the third generation code.

Sybase Adaptive Server

Adaptive Server Enterprise for Linux: Now Available

Adaptive Server Enterprise for Linux is a highly scalable, high-performance database engine that includes standard features of Adaptive Server Enterprise and all related connectivity components. Download a FREE Developer's Edition!


The Solid Autonomic Data Management Platform is a distributed and embedded data management solution designed to ensure that data in complex distributed applications takes care of itself. Solid provides you with a high-performance relational database management system (RDBMS) that can run on devices with limited RAM. It offers hot standby for carrier-grade availability, and it gives you a way to automatically and reliably distribute data across a complex multi-node architecture.



The SQL Relational Database System from JustLogic Technologies. Their feature list should be consulted for details; some features that caught my eye are: Transaction Support (Two Phase Commit) Automatic rollback after hardware/software/power failure. Cost-Based Optimizer FrontBase has many supported features.


Client-Server Architecture

YARD-SQL uses a client server architecture. Because of that, it is possible to have local just as over a network distributed installations of the YARD-SQL database server and its clients.


The YARD-SQL database server uses a multithreaded architecture based on Posix threads for UNIX and Win32 threads on Windows respectively. All clients share a common buffer pool, so clients benefit from other clients disc read operations.

Harddisk Access

YARD-SQL uses a file system independent way for storing data to disk through unbuffered raw I/O. This allows YARD-SQL to exceed the limits of file systems (e.g. maximum file size 2 GByte) and therefore to operate with large databases distributed to several disks. In addition, raw I/O is the basis for providing a fast recovery after a system crash. All Before Images of modified pages will be saved to a special area on disk (physical log), while all user activity is logged to a transaction log (logical log).

Birdstep RDM Server

New Birdstep RDM Server! (formerly Velocis)

The Ultimate Choice for Embedded Databases

Birdstep's RDM Server 5.0 is the latest release of the industry leading high performance database. Now supporting both 64bit and 32bit servers and clients, RDM Server 5.0 continues to provide all of the functionality and performance users expect for their business critical applications.

Embedded into the developers application, RDM Server is used where performance, size, and reliability are critical to their application. As an embeddable database management system employing a client/server architecture, RDM Server is found in a broad range of application that includes the financial services industry, telecommunications industry, and e-Business applications.[...]

FairCom c-treeSQL Server

c-treeSQL Server

The c-treeSQL Server provides a high performance SQL interface into the proven core of the c-tree Server. Tailored for high volume production environments, the c-treeSQL Server includes optimizations such as sophisticated query rewrite techniques to improve nested query performance and join-order optimization to improve performance of queries joining many tables. The c-treeSQL Server extensively caches and buffers information for maximum transaction and query throughput.

Because the c-treeSQL Server is built on the same core technology of the c-tree Server, you get all of the performance and features that distinguish the c-tree Server with the additional benefits of a functionally-complete SQL interface compatible with SQL-92, ODBC 3.0 and JDBC 2.0 standards.

FairCom offers both a c-treeSQL Server and a c-treeSQL Server Java Edition. The c-treeSQL Server provides embedded SQL and interactive SQL utilities, JDBC support, and an ODBC driver. The c-treeSQL Server Java Edition adds support for stored procedures and triggers. Note that the c-treeSQL Server Java Edition requires the JDK from Sun Microsystems.

FairCom's latest commercial release includes c-treeSQL Server support for most of the major platforms including Windows, Linux, Mac OS X, HP-UX, Solaris, and AIX.

Thunderstone TEXIS


TEXIS is the only fully integrated SQL RDBMS that intelligently queries and manages databases containing natural language text, standard data types, geographic information, images, video, audio, and other payload data.

Its text search operators have an English language vocabulary of 250,000 word and phrase concept associations for natural language queries. It also provides excellent proximity control, fuzzy searches, true regular expression matching, and written numerical value searches.

Texis is being used in many diverse Internet, real-time, and integrated applications such as; message profiling & handling, image library management, help-desk support, online news retrieval, business intelligence, research libraries, litigation support, and Internet retail operations.


Integra4 SQL engine services requests for data storage and retrieval from the front ends. Its primary tasks are:

Quite obviously, the front ends and the data server back end communicate to each other using a pre-determined interface. Integra4 uses the industry standard interface provided for accessing the SQL engine. This standard is known as Open Database Connectivity (ODBC).[...]

Primebase SQL Database Server

What is the PrimeBase SQL Database Server?

The PrimeBase SQL Database Server is a fast, cross-platform database server with support of SQL, multi-users and features an transaction engine and full text indexing.


Especially for intra- and internet solutions the speed of the database is crucial. The PrimeBase database is one of the fastest in the world. It uses an extremely efficient proprietary caching algorithm, called prime-hashing. A further increase in speed is achieved through transaction log compression. All database queries are precompiled and optimized using the rules of relational algebra.


Instable databases, causing loss of data and malfunctions, can have a devestating effect on your entire company. By using a highly modular design, PrimeBase guarantees maximum stability. For the past 10 years this has been proven in many mission critical applications world wide.


The demands on a database grow and change in response to the needs of your company. The Primebase database is scalable for diverse needs, from an instalation on a notebook to multiprocessor applications in company wide networks. And this is possible without change to programs or compatibility problems. PrimeBase SQL can be deployed on all significant platforms.


Databases must be dependable and cost effective, constantly able to manage more data, transactions and users and run in diverse environments from laptops to international websites without causing problems. The PrimeBase SQL database delivers an exeptionaly wide spectrum of functionality. Runtime configurations are possible for single user work places, even with read-only data from CD.

Ease of Use!

Ease of use is one of the basic requirements for a database. A key advantage of PrimeBase is the clear & simple structure. It allows developers and users to easily develop and deploy database applications without hassle. The PrimeBase database can be easily installed without any special knowledge. The administration of the database structure is easily done using the integrated browser based Admin Server.


With the high performance PrimeBase SQL database server Your client/server, internet or intranet applications are placed on an exeptionaly solid foundation. PrimeBase SQL DataBase Server is cross platform capable and scalable is easy to install: copy - start - and it works! offer unsurpassed price to Performance is the fastest database of its class and with a throughput of up to 4.000.000 transactions per hour it is capable of handling even the heaviest demands.

Infoflex SQLflex

SQLflex is a powerful, full featured SQL that delivers all the capabilities of both Informix-ESQL/C and Informix standard engine, but as low as 10% of the cost. If you are already using Informix, you will be able to replace Informix without modifying your existing code or databases. If you are NOT using Informix, then here is your opportunity to get the power and compatibility of a major SQL vendor at a fraction of the cost.

Another cost savings advantage of SQLFLEX is its availability on low cost platforms, currently unsupported by Informix or other SQL vendors. These platforms include LINUX, COHERENT, WINDOWS and VMS.


DBMaker Overview

We can help you change your software for the better with one simple solution - DBMaker - the no-hassle database engine that is perfect for extending your application capabilities.

DBMaker brings cost-effective scalability and reliability to Independent Software Vendors looking to improve functionality and database performance of their software. DBMaker has everything you could wish for in a relational database - powerful engine, open interface, multimedia capabilities, large database features, cross-platform support, but the main benefit of DBMaker is that it is EASY. Easy-to-install, easy-to-configure, easy-to-scale, easy-to package and easy-to-maintain. We would like to make your product better without complicating it. We would like to make your life EASY

DBMaker provides a multitude of robust features that enhance the power, performance and flexibility of any software suite. Here are a few of these features.

High Performance Database Engine

DBMaker has a powerful high performance internal database engine responsible for generating and storing a variety of complex data types and it is designed to provide high efficiency for accessing relational data. A powerful query optimizer combined with multiple indexing methods results in faster searches and more efficient storage. High-speed Performance is ensured by full integration of a native ODBC API, multimedia handling and efficient data access routines.

To optimize the speed and concurrency of data accessed by multiple users DBMaker dynamically adjusts between table, page and row locking levels. The automatic cost-based query optimizer guarantees that query results are returned as quickly as possible. Moreover, DBMaker uses multi-threading where possible, ensuring improved performance of SMP systems.

Open Interface

Using the native ODBC interface and ANSI SQL-99 support, you can quickly create high-performance applications using variety of popular development tools, including Visual C++, Visual Basic, Delphi, Perl and PHP. Thus DBMaker allows you to work with the tools that you already have, and does not restrict you to a proprietary development environment.

DBMaker JDBC-ODBC Bridge enables greater flexibility and connectivity by supporting Java applications and applets as well as granting these applications access to DBMaker databases. The bridge provides high levels of adaptability, power and ease of use.

High Portability and Scalability

Extensive cross-platform support and unique open architecture ensure that your needs will never outgrow DBMaker. You can deploy database applications across several platforms and easily scale from a small single-user system on a notebook computer all the way up to large multi-user system distributed around the world.

In order to facilitate this around-the-world distribution CASEMaker offers great features for managing large volumes of interactive information on a Web Server. DBMaker comes with several basic functions such as SQL, multi-user capability, transaction management, security management, consistency management, crash recovery, online backup, etc., making it a great database management solution for any ISV seeking to add value to its current software suite.

Multimedia Data Management

Powerful multimedia management capabilities built into the database engine allow your clients to efficiently store and manipulate large amounts of multimedia data including text, graphics, audio, video and animation. Multimedia management capabilities also provide exceptional flexibility, allowing for easy storage of multimedia data in different ways depending on the needs. You may store multimedia data directly in the database as Binary Large Objects (BLOBs), or you may store your multimedia data as File Objects, granting third-party multimedia tools full access to your multimedia data while still keeping it under database control.

XML Data Bridge

XML is quickly becoming the industry standard for publishing and sharing data across the internet. Responding to this trend DBMaker now allows you to easily publish tables as XML documents with the help of DBMaker XML Data Bridge. It enables great flexibility and connectivity as it supports transfer of XML data to and from DBMaker.

DBMaker COBOL Interface

The DBMaker COBOL Interface (DCI) is a new interface that does not require critical COBOL operations such as WRITE, REWRITE, DELETE, and READ to be translated into SQL syntax. DCI saves programmers the time of rewriting their existing COBOL applications, while at the same time providing them with modern and secure database technology.

Enterprise Database Functions

DBMaker is a full service database, offering a multitude of advanced features including all the functionality of a complete enterprise database. With DBMaker you will save a bundle and still will be able to equip your software with the highest database performance level using standard enterprise database features like automatic simultaneous replication of data and updates across the database system, distributed database management, complete backup and restore functions and security.

Mimer SQL Engine

Do you develop software solutions for Windows, Linux, Unix or OpenVMS?

Do you need:

If yes, you should then take a closer look at Mimer SQL Engine!

Mimer SQL Engine is a complete relational DBMS perfectly suited for building into any software application distributed in mass volume. It is also the perfect choice for anyone looking for a DBMS for mission-critical systems.

Mimer SQL Engines established, efficient and self-tuning DBMS kernel provides you with a zero maintenance run-time environment all part of Mimer SQL Engines unique Install & Forget concept. Put that together with Upright Database Technologys firm commitment to international standards, and Mimer SQL Engine provides the highest possible degree of interoperability with all major development tools and standard interfaces.

Your developers skills in, e.g. SQL and Java can easily be reused without any need for weeks of training. Instead, you can start using Mimer SQL Engine immediately, all you have to do is download a free developers version from our Mimer SQL Developer web site!

Mimer SQL Engine is available on all of the important computer platforms including Windows, Linux, UNIX and OpenVMS. And, it is scalable - from small single-user systems to large enterprise servers with thousands of concurrent users, Mimer SQL Engine can handle anything!

Mimer SQL Engine has more technical advantages than other comparable products when built into mass-produced software applications. But perhaps most important is that Upright Database Technology can offer you a flexible licensing model when you use Mimer SQL Engine in your application. This means that you can market your application at the best competitive price without jeopardizing your margin.


Object-Relational Database

At the core of Virtuoso is a powerful object relational database with SQL 92 and 200n features and a flexible stored procedure language.

SQL 2K style objects (user defined data types) and hosted Java or .NET classes are first class citizens of the SQL world and can be stored as column values or processed as stand-alone data in stored procedures.

Virtuoso's database engine offers dynamic locking, scaling from rows to pages, good multiprocessor scalability, XML, binary and text large objects, a native XML data type, full text indexing, on-line incremental backups and all features you have come to expect in a full feature RDBMS.

Virtuoso offers standard role based security plus a policy model for row-level security. The latter can be used for intelligently restricting SQL statements to specific data without needing to manage hard-coded views.

Virtuoso offers its database services to ODBC, OLE/DB, JDBC and .NET clients and can be a resource manager and/or transaction coordinator under Microsoft's Distributed Transaction Coordinator (MS DTC) or XA.

Dynamic Web Pages (VSPX, PHP, ASP.NET, JSP, Perl, Python) and Web Services hosted within Virtuoso have in-process access to Virtuoso's SQL data (native or external via ODBC/JDBC), eliminating web server to DBMS communication latency.


Scalable. Secure. Full Featured. RelX Enterprise is designed to offer the same features and performance as the much more expensive Oracle, MS SQL, IBM, Tamino, Sybase databases at a fraction of the price.

RelX Enterprise is designed to meet the demanding needs of Global 2000 corporate and governmental customers. RelX Enterprise is the only database to receive the Russian Military Orange Book security clearance in Russia (equivalent to B3 certification in USA).

Out-of-the-box RelX Enterprise can out-perform Oracle and you won't need a $100,000 DBA and 6 months of performance tuning. Expect predictable, commercially robust performance. Leverage key real-time features such as online hot-back-ups, journaling, triggers, native XML, User defined functions, replication and synchronization and the guaranteed best price/performance ratio in the industry.[...]

[The company also offers "Micro" and "Embedded" variants.]

Pervasive SQL (formerly Btrieve)

Pervasive.SQL V8 Overview

For developers building mission-critical applications for small- to mid-sized enterprises, the question is, how to ensure success? The answer: Pervasive.SQL V8. This complete data-management solution integrates performance, embeddability and low total cost of ownership in a powerful, flexible and scalable engine, the next generation of industry-leading Pervasive.SQL.

Learn about the improvements in Pervasive.SQL V8 and the V8 Security Feature Pack.

Pervasive.SQL V8 offers:

Industry-leading performance

Embeddability for seamless application development and deployment