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RDM Embedded is based on the very efficient and comprehensive Network data model. Pre-dating the relational model, the network model is proven to have the best performance when relating data. RDM Embedded also supports the relational data model for more traditional data representation. These two models can be combined in RDM Embedded providing the best of both worlds – Birdstep’s databases are the only databases that offer this capability. With support for high level interface like SQL and XML the flexibility is unbeaten. Some of the Key benefits offered by RDM Embedded v8.0:
Pure and Hybrid In-Memory Operation
In-memory database capabilities add a huge amount of flexibility to an embedded db system. RDM Embedded can now be configured to run completely diskless or in hybrid mode where the application designer puts part of their implementation in-memory and other parts on-disk in a single system.
True Varchar Support
Fast embedded database engines implement fixed sized records, sacrificing database image size for speed. But with this function addition RDM Embedded combines the fixed sized records, proven over the last 20+ years of deployment, with a high-performance variable sized string implementation.
Sparse Indexing
For on-disk efficiency a data index is a duplicate but ordered instance of your data. Duplication of data steals both CPU and I/O cycles, so to avoid this overhead RDM Embedded adds a user configurable sparse indexing system for strings, where you decide the amount of duplication you’d like. The implementation supports no duplication, partial duplication, or full duplication giving you the flexibility to tune the size of your database vs. performance. If you think of it, most string comparisons are resolved by comparing the first few characters, so why duplicate the full string when you only need a few bytes?
Active-Passive Replication
Data redundancy, fault tolerance, and high availability are all keywords tied into data replication. With RDM Embedded advanced replication engine, application databases can be replicated for fault tolerance and high availability.
64bit File Systems Support
Commercial file systems have over the years evolved to support 64 bit addressable files. With this release, RDM Embedded can now utilize this extended support to allow storage of even more data in the database engine.
Dual Database Model Support
RDM Embedded is based on the high performance and expressive network data model. It also supports the traditional, relational data model. Unique to RDM Embedded is its capability to combine the network and relational data models giving developers the advantages of both models. |
SQL API
SQL is a common database query language often used for its simplicity. RDM Embedded has implemented a SQL API set to support applications that manage the database through SQL commands.
JAVA API
The Java API is based on Java Native Interface (JNI) technology. By an extended C API to the Java programmer via the JNI, RDM Embedded lets you organize and access information efficiently, regardless of the complexity of your data.
Comprehensive Data Modeling Embedded databases are used in application specific systems where it is important to accurately express the data relationships. RDM Embedded uses a C-based Database Definition Language (DDL) that is used to define all of the data relationships to the degree of detail needed by the developer.
Multi-User Support
In many cases, developers need to have multiple applications, or instances of an application, access a database while maintaining data integrity. RDM Embedded supports multiple users whether they are multi-tasking, multi-threading, or accessing over the LAN. With locking and transaction processing features, RDM Embedded ensures data integrity through managed control and record keeping.
Data Integrity
Transaction Processing, File Locking, and Database Mirroring are key features within RDM Embedded to ensure the data integrity essential for multi-users and database recovery.
Native API
RDM Embedded includes over 150 C-based functions available to the application for complete database control. This combined technology provides tremendous speed advantages, and minimizes data redundancy.
XML API
XML is an emerging standard used by web appliances and systems to facilitate easy data transfer between disparate systems. RDM Embedded’s XML import/export layer allows for import and export of well- formed documents with or without DTDs or XML Schema. |