RDM Embedded

Specifications

Raima Database Manager (RDM) Embedded is a high-performance, real-time, small footprint embedded database solution successfully deployed in millions of business critical applications and devices over the past 25 years.

RDM Embedded Overview
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 worldsBirdsteps databases are the only databases that offer this capability. With support for high level interface like SQL and XML the flexibility is unbeaten.

RDM Embedded Key Features

MicroHTTP Server
adds the capability to insert, update, and delete data within the RDM Embedded database using a Web browser over the standard HTTP protocol. This enables developers to create Web based applications that can remotely access the database engine.

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.

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.

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.

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.

Circular Tables
allow developers to define the maximum number of rows allowed in a table and, when the limit is reached, additional rows can be added to the table overwriting previous rows. It uses the First in First out (FIFO) concept meaning the oldest record is replaced by the new record.

Sparse Indexing
Save space and resources by defining your indexes as sparse. Traditional on-disk databases will duplicate the indexed data for search efficiency, but vast space. RDM Embedded you usually only need the first few bytes to understand the search order, so to avoid added overhead of full duplication RDM Embedded allows you to specify full duplication, partial duplication, or no duplication of the string data to reduce the CPU and I/O cycles.

Native API
RDM Embedded includes over 150 C-based functions available to the application for complete database control.

SQL API
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.

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 XML data.

Database Specifications

Maximum Databases Open Simultaneously: limited only by computer memory
Maximum Fields Per Record: limited only by maximum record size and available memory
Maximum Files Per Database: 256
Maximum Key Size: 242 Bytes
Maximum Objects Per Database: 4,294,967,040
Maximum objects Per File: 16,777,215
Maximum Record Size: 32 KB
Code Footprint starting at: ~270K (depending on operating system and features).
Memory Requirements starting at: ~50K

Operating Systems Supported

AIX
Embedded Linux
FreeBSD
Integrity
HP-UX
Linux
MacOS
MicroC
QNX Neutrino
Solaris
VxWorks
Windows
Windows CE
Windows Embedded

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