| eXtremeDB |
[Vendor: McObject LLC]
McObject's eXtremeDB is a new small footprint main memory database engine for intelligent, connected devices.
McObject and its eXtremeDB database engine sprang from its founders' observations as senior executives and technologists in the database software industry. Recently, a new type of customer emerged, seeking high performance data management for what used to be considered hardware devices -- set-top boxes, telecom switches, consumer appliances, office equipment and the like.
At first, the McObject founders worked with existing technology to fit this high-tech gear. Usually this required stretching business-oriented database software to fit real-time, embedded needs. Such project-by-project customization of traditional DBMS software was labor-intensive-and hence expensive-and failed to keep pace with advances in embedded operating systems and tools, and in the devices themselves. The founders recognized an opportunity: build a new kind of data management engine, from scratch, to meet the needs of intelligent, connected devices
eXtremeDB features that were designed specifically for this domain include: - Accelerated Transactions -- eXtremeDB accelerates data management by storing data entirely in main memory, eliminating disk access overhead. The eXtremeDB transaction manager is optimized for high transaction rates.
- Direct Data Access -- Earlier data management technology requires copying records from the file system to cache, and then to a new location for manipulation by the application. By working with data directly in main memory, eXtremeDB eliminates the overhead of duplicate data sets and of copying data between environments.
- No Translation -- eXtremeDB stores data in the exact form in which it is used by the application - no mapping a C data element to a relational representation, for example, or requiring additional code to pick fields from tables and copy them to C structures. By eliminating this overhead, eXtremeDB reduces memory and CPU resource demands.
- High Reliability -- For data integrity, eXtremeDB fully supports the ACID principles, ensuring that operations grouped into transactions will complete together or be rolled back to a pre-transaction state.
eXtremeDB provides a library of standard database functions, common to all applications. However, most of the API for accessing persistent data in an application is generated by eXtremeDB when the database schema is compiled. Because it is based on the developer's data model, this application-specific API is easy to learn and optimized for a project's exact needs.
Developers recognize that tight, efficient code is the key to minimizing resource demands. eXtremeDB facilitates such coding by supporting virtually all data types, including structs, vectors and BLOBs. For querying, eXtremeDB provides hash indexes, for exact match searches; b-tree indexes for pattern match, range retrieval and sorting; and object-identifier references, for direct access. Rather than storing duplicate data, indexes contain only a reference to data, keeping memory requirements to a minimum.
An early release evaluation version of eXtremeDB is now available for download, where you can also download the User's Guide, a Data Sheet, and a White Paper, Re-inventing Data Management For Intelligent Devices.
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