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RTC Magazine: eXtremeDB helps build intelligence into SCL Elements' smart controllers for wireless building automation!

In solution from Indience, Perst Lite embedded database & BlackBerry mobilize SAP, other enterprise apps. Read more.

How do you tell a real in-memory database from an imitation? Get the white paper: "Will The Real IMDS Please Stand Up?"

MedAptus selects Perst Lite for mobile healthcare app on BlackBerry smartphones. Get details.

Embedded database for Silverlight? Perst is the solution. Read the news, and check out our Silverlight database demo!

New Java Native Interface (JNI) for eXtremeDB provides fastest Java database solution for embedded and real-time enterprise systems.

Read about new eXtremeDB 4.0, our fastest, most scalable embedded database ever - and about two new customers, myYearbook and SCL Elements.

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Perst embedded database features and benefits

  • Object-oriented. Perst stores data directly in Java and .NET objects, eliminating the translation required for storage in relational and object-relational databases. This boosts run-time performance.
  • Compact. Perst’s core consists of only five thousand lines of code. The small footprint imposes minimal demands on system resources.
  • Fast. In the TestIndex and PolePosition  benchmarks, Perst displays one of its strongest features: its significant performance advantage over Java and .NET embedded database alternatives.
  • Reliable. Perst supports transactions with the ACID (Atomic, Consistent, Isolated and Durable) properties, and requires no end-user administration.
  • Rich in development tools. The Perst API is flexible and easy-to-use. The breadth of Perst’s specialized collection classes is unparalleled. These include a classic B-Tree implementation; R-tree indexes for spatial data representation; database containers optimized for memory-only access, and much more.
  • Transparent persistence. Perst is distinguished by its ease in working with Java and C# objects, and suitability for aspect-oriented programming with tools such as AspectJ and JAssist. The result is greater efficiency in coding.
  • Source code available. With free, available source code, nothing in Perst is hidden, and the developer gains complete control of the application and its interaction with the database.
  • Advanced capabilities. Perst’s extras include garbage collection, schema evolution, a “wrapper” that provides a SQL-like database interface (SubSQL), XML import/export, database replication, support for large databases, and more.

 

Perst Design Principles


Perst's goal is to provide developers in Java and C# with a convenient and powerful mechanism to deal with large volumes of data. Perst's design principles include the following:

  • Persistent objects should be accessed in almost the same way as transient objects (transparent persistence)
  • A database engine should be able to efficiently manage much more data than can fit in main memory
  • No specialized preprocessors, enhancers, compilers, virtual machines or other tools should be required to use the database or develop applications with it.