eXtremeDB/rt

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Aircraft

Automotive

Railway

Energy

Medical

Deterministic ACID-compliant transactions

Adaptable real-time transaction managers

No restrictions on execution patterns

Highly configurable database kernel

Broad RTOS Support

eXtremeDB/rt is the first and only deterministic embedded database management system for mission- and safety-critical hard real-time applications.

Modern avionics and aircraft navigation systems, driver assistance systems, critical medical equipment and similar systems’ data management is complex, often non-interruptible and have strict requirements for timely execution. Those requirements are defined as real-time constraints on the systems’ temporal behavior. The eXtremeDB/rt pioneering design addresses those constraints through preserving the temporal validity of data and enforcing predictable execution of critical data transactions.

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eXtremeDB/rt Q & A: what distinguishes a true real-time database?

What sets eXtremeDB/rt apart?

Deterministic ACID-compliant transactions

eXtremeDB/rt provides transaction semantics for passing the transaction’s deadline and transaction priority to the database scheduler, while the eXtremeDB/rt kernel enforces these deadlines. At the same time, the kernel preserves strong internal database consistency through enforcing the ACID transactions’ properties.

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Adaptable real-time transaction managers

The eXtremeDB/rt transaction manager is based on a preemptive High Priority Earliest Deadline First (EDF) scheduling algorithm. An alternative transaction manager makes use of the priority inheritance protocol (PIP) implemented by most modern real-time operating systems. Regardless of the choice, the real-time transactions deadlines are fully enforced.

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No restrictions on execution patterns

The eXtremeDB/rt transaction managers adapt to the underlying OS schedulers, yet do not make any assumptions about transactions patterns and/or the applications’ data flow. The schedulers can handle periodic and aperiodic transactions and do not require any execution-time estimates to enforce transactions’ deadlines.

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Highly configurable database kernel

While preserving fully deterministic real-time transaction control, the eXtremeDB/rt kernel can be easily tailored for the specific needs of target applications. Source-code level kernel configurations can include only features required by the target applications, excluding unnecessary database management code.

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Broad RTOS Support

In order to satisfy hard real-time requirements, the eXtremeDB/rt target applications must run in the context of a real-time operating system. eXtremeDB/rt is available for all major commercial RTOS including those that are certified to airborne safety (DO-178B/C ) and automotive safety (ISO 26262) specifications on selected hardware.

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In the News

McObject Announces Availability of eXtremeDB/rt for Microsoft Azure RTOS ThreadX, EEJournal.com. November 11, 2021

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“On eXtremeDB/rt. Q&A with Steven Graves” ODBMS.org, October 7, 2021

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Tailored to your needs.

The nature of eXtremeDB/rt’s tight integration with the RTOS and target hardware requires that each evaluation package be assembled uniquely for your needs.

Please contact us so that we can gather information on your RTOS vendor, version, target hardware, tool chain, and so on.

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+1-425-888-8505

News about Real-time Data Management

We invite you to browse our growing library of published articles and press releases on topics including database features and capabilities, partnership announcements, and challenges solved.

In the news

McObject Announces Availability of eXtremeDB/rt for Microsoft Azure RTOS ThreadX

EEJournal.com, November 11, 2021

McObject Announces Immediate Availability of eXtremeDB/rt for FreeRTOS

IoT for All, November 4, 2021

McObject teams with Lynx for real-time systems

McObject and Lynx Software Technologies Team Up for the First COTS Hard Real-Time DBMS for Mission- and Safety-Critical Systems

GlobeNewswire, October 21, 2021

McObject reaches out with a true real-time deterministic database for embOS RTOS applications.

Military Embedded Systems, October 13, 2021.

McObject Announces Immediate Availability of eXtremeDB/rt for DDC-I’s Deos Real-Time Operating System

McObject® announces the availability of eXtremeDB/rt for DDC-I’s Deos™ real-time operating system, a safety-critical embedded RTOS that employs patented cache partitioning, memory pools, and safe scheduling to deliver higher CPU utilization than any other certifiable safety-critical COTS RTOS on multi-core processors. Get the news.

On eXtremeDB/rt. Q&A with Steven Graves

“Real-time analytics has nothing to do with real-time systems.” By Roberto Zicari ODBMS.org October 7, 2021. Read the blog.

Keeping A Mission-Critical Deterministic DBMS On Time

Open-source and commercial database management systems (DBMSs) have been used in embedded systems for more than 20 years. For the most part, developers don't even debate whether to buy or build their own DBMS for embedded systems; that component is almost always bought. Get the news from EmbeddedComputing.com

McObject Collaborates with Wind River to Deliver First-Ever Deterministic Database System for VxWorks-based Real-Time Embedded Systems

McObject®, an innovative pioneer in embedded database systems, has collaborated with Wind River® and today announced the availability of McObject’s revolutionary eXtremeDB/rt database management system (DBMS) for VxWorks®-based hard real-time embedded systems. Read more at ODBMS.org

Real-time tasks need real-time data

Hard real-time systems are following the same trajectory as embedded and soft real-time systems: They’re more elaborate systems that are being required to do more with more data that’s more complex. Historically, real-time system developers have had to separate database management from hard real-time tasks, do without, or develop their own real-time database management. Read the Wind River blog.

Webinar about eXtremeDB/rt

A 7-minute video introducing eXtremeDB/rt and what it means to be a true, hard real-time database management system. A brief overview of how eXtremeDB/rt maintains internal and external consistency of data.

CMU

Vaccination Database Talks

Deterministic Database Management in Mission-Critical Applications

Carnegie Mellon University, CMU Database Group - Vaccination Database Tech Talks (2021)
Speakers: Andrei Gorine, McObject CTO

Watch the video on YouTube: Deterministic Database Management in Mission-Critical Applications

Designed specifically as an in-memory database system, not an afterthought.

Learn why this matters.

Embedded & Real-time Systems

The eXtremeDB in-memory database system was designed specifically for use in resource-constrained, mission-critical and safety-critical embedded systems.

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eXtremeDB enables the developer to easily combine both database paradigms – in-memory and on-disk – in a single database instance.

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Learn more about eXtremeDB in-memory or hybrid in-memory/persistent database for embedded systems

Why is the IMDS an ideal way to reduce memory consumption in embedded systems?

Learn what makes eXtremeDB ideal in real-time systems

High Performance Computing

eXtremeDB in-database analytics offers breakthrough efficiency and can be used with the product’s in-memory database system (IMDS) capability, or independent of it.

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Learn more about the IMDS as a powerful, persistent memory caching solution.

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Learn about hybrid eXtremeDB for Big Data and Analytics or for Financial systems

Review our independently audited benchmark test results to learn how fast a hybrid in-memory database can be

Embedded and/or Client/Server

Fast, flexible, platform independent eXtremeDB is data management wherever you need it, and can be deployed as an embedded database system, and/or as a client/server database system.

eXtremeDB is fast, flexible database management wherever you need it. Learn more.

Hybrid In-memory and/or Persistent

Combine both database paradigms – in-memory and on-disk – in a single database instance. Specifying one set of data as transient (managed in memory), while choosing persistent storage for other record types, requires a simple database schema declaration.

Learn why starting with an in-memory database makes for a better hybrid system.

Related Resources

Watch this and other Webinars from the DBMS experts at McObject

Webinars for Professional Developers

Watch to on-demand Webinars, hosted by experts, about proven database management system practices. Watch "Multi-Core & Embedded Software: Optimize Performance by Resolving Resource Contention". Or, "Embedded Databases: Make or Break Technology Choices for High Performance Applications" and others.

Watch Embedded Databases: Building In Always On High Availability
This Webinar highlights the issue of operational continuity: how can a database system survive the failure of the software or hardware environment in which it operates?

Watch What Makes a Database System ‘In-Memory’?
Join McObject CEO Steve Graves to explore this topic, including the limitations (and burden) of database caching; data transfer and duplication; volatility and recoverability, and more. Gain ideas and techniques for building better, faster software.

Watch Eliminating Database Corruption
Why corruption occurs and provides strategies to prevent it, focusing on hidden dangers – like storage device settings that can undermine data consistency – as well as more recognizable risks, such as passing wrongly typed data to a database run-time.

Review our list of Webinars

More than just IoT database Webinars, find our experts in respected journals

Articles for Professional Developers

Change Data Capture in Embedded Databases Embedded Computing Design
Industrial Internet of Things (IIoT) Database Usage in Rail Systems insight.tech
The Importance of Distributed Databases for the Internet of Things Embedded Software Engineer - ESE Kongress edition, page translates
Comparing Optimistic and Pessimistic Concurrency, Embedded Computing Design

See a list of articles

White Papers for Professional Developers

We have been testing, improving on, and retesting our software from the beginning in 2001 in order to provide our clients with the best possible data management solutions. Read "Database Persistence, Without The Performance Penalty" and more.

Review our research

White paper: Database Persistence, Without The Performance Penalty

Some applications require higher data durability than in-memory storage provides. What if DRAM could be made persistent? AgigA Tech’s AGIGARAM non-volatile DIMM (NVDIMM) delivers that capability. McObject benchmarked the eXtremeDB In-Memory Database System using AGIGARAM as storage, including “pulling the plug” mid-execution, and comparing the NVDIMM to transaction logging as a solution for data durability/recoverability. This paper presents the benchmark tests and results.

White paper: Will the Real IMDS Please Stand Up?

In-memory database systems (IMDSs) have changed the software landscape, enabling "smarter" real-time applications and sparking mergers and acquisitions involving the largest technology companies. But IMDSs’ popularity has sparked a flurry of products falsely claiming to be in-memory database systems. Understanding the distinction is critical to determining the performance, cost and ultimately the success or failure of a solution. This white paper examines specific products, seeking to answer the question, “is it really an in-memory database system?”

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In addition to unique features like Active Replication Fabric™, no other database management system offers such an extensive combination of features for developers to choose from.

Hybrid data storage

Unlike other IMDS, eXtremeDB can combine the strengths of on-disk and in-memory database systems. In other words, eXtremeDB databases can be all-in-memory, all-persistent, or have a mix of in-memory tables and persistent tables with a simple database schema. This unparalleled flexibility enables developers to tailor data management in order to optimize applications for speed and persistence. System developers can make intelligent trade-offs between performance, cost-efficiency, power consumption, and physical space-conserving data storage hardware.

Learn why starting with in-memory database system allows for improved performance.

Active Replication Fabric

Active Replication Fabric offers reliable IoT database management by solving key challenges for developers. eXtremeDB offers bidirectional replication, multi-tier replication (e.g. edge-to-gateway-to-gateway-to-cloud), compression to maximize limited bandwidth networks, and more.

Learn more about Active Replication Fabric

Row & Columnar Flexibility for Time Series Data

Time series data management systems require large volumes of information to be available continuously. eXtremeDB excels in this capability. eXtremeDB for HPC implements columnar data layout for fields of type ‘sequence’. Sequences can be combined to form a time series, ideal for working with tick streams, telemetry, and other sequential data. This technology supports database designs that combine row-based and column-based layouts, in order to best leverage the CPU cache speed. Learn how.

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Learn more about eXtremeDB for time series data

Embedded and Client/Server

Fast, flexible eXtremeDB is data management wherever you need it, and can be deployed as an embedded database system, and/or as a client/server database system.

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Compatible with all embedded/real-time operating systems

Read about cross-platform database application development in our on-line documentation

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eXtremeDB HA and Cluster

Sharding allows for elastic scalability, and leverages the processing power, memory and bandwidth of multiple hardware nodes. Each database shard can have one or more backup (replica) copies. Cluster is McObject’s distributed real-time database system. It manages databases across multiple nodes, enabling two or more servers to share the workload. It dramatically increases available net processing power, reduces system expansion costs, and delivers a more scalable and reliable database solution. High Availability (HA) enables deployment of two or more synchronized databases within separate hardware instances using communication channels implemented over standard or proprietary protocols. Sharding is a core feature of eXtremeDB. Cluster and High Availability, all of which are offered in a separate add-on module. Here we compare and contrast Sharding, Cluster and High Availability. Close window