Top Downloads News Highlights

New eXtremeDB 5.0 embedded database delivers improvements in clustering, speed and developer efficiency! Get details.

Read McObject CEO's article, "Buy" Over "Build": The Military Systems Migration Mantra.

McObject, Fultech & Kove compress timescale in real-time financial risk solution, pointing way to regulatory compliance, safer trading. Read more.

McObject's new white paper examines the performance impact of database durability/recoverability strategies. Download report.

Printable Version

Perst Open Source Java Database / .NET Database Evaluation Software

Download an open source / evaluation copy of the Perst™ embedded database for Java or .NET. Complete documentation can be downloaded separately.

To purchase a commercial license for Perst for Java or .NET please contact us.
 

Perst and Perst Lite for Java
Perst open source / dual license embedded database for Java.
The Perst for Java distribution is compatible with Google's Android platform, and also includes Perst Lite for Java ME.
Build 4.32. Updated December 21 2012. Change history:

1. Fix bug in Patricia exact match search
2. Limit level of recursion in memory allocator which can cause stack overflow in case of high memory fragmentation
3. Add aggregator class
4. Add n-gram index for fast regular expression search
5. Use 3-gram index in jsql queries
6.Catch exceptions in finalizer thread

Perst for .NET (C#)
Perst open source / dual license embedded database for .NET (C#), .NET Compact Framework, Silverlight and Windows Phone 7 and 8, WinRT.
Build 4.40. Updated February 11, 2013. Change history:

1. Added support for WinRT (Windows Store apps or Windows Metro)
2. Add support for Windows Phone 7.1
3. Add test projects for Windows Store apps (Metro) and Windows Phone:
          TestIndexMetro, TestLinqMetro, TestLinqWP

 

Perst Data Sheet

Perst ProScout demo
ProScout is a sample Java ME midlet, based on Perst Lite, that helps a sports recruiter manage information on a mobile device. ProScout has been tested in the PhoneME, Nokia S40 and S60, and Blackberry environments. Includes Getting Started file and commented source code.

Perst for Silverlight CRM demo
This demo shows Perst for .NET in a Silverlight-based customer relationship management (CRM) system. The demo runs in the user’s browser, stores records locally, and takes full advantage of Perst features. Includes source code and article w/ extensively comments.

PolePosition benchmark, Perst implementation - asynchronous version
PolePosition is a benchmark test suite to compare database engines and object-relational mapping technology. Includes PolePosition framework source to help to implement tests quickly, conduct timings and display results. Database transactions are committed asynchronously.

PolePosition benchmark, Perst implementation - synchronous version
This is the same PolePosition benchmark for Perst described above, but with database transactions commmitted synchronously.

TestIndex for Android
TestIndex is an Android-ready database benchmark application, with complete source code, that measures performance using Perst on Android, and Android’s bundled SQLite database system, performing the same tasks. Download TestIndex. (This download consists of the TestIndex benchmark application. Click here to obtain a report on TestIndex results in both in the Android emulator and in T-Mobile's G1 smartphone.)