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Open source Extract Transform Load engine written in Java
...Key Features:
* embeddable, open source and free
* fast and scalable
* uses target database features to do transformations and loads
* manual and automatic data mapping
* data streaming
* bulk data loads
* data quality features using SQL, JavaScript? and regex
* data transformations
Requirements
* Java 1.6 and up
* At least 4 MB of RAM
New in 3.2 (01/18/2013)
* Improved auto-update functionality
* Bug fixes
The goal of Space4J is to transparently maintain your Java objects in memory without making you worry about how they are going to be persisted. Every time your application is started, your objects will just be sitting there in RAM memory waiting for you.
This is an implementation of the java DOM specification that keeps all
its "parsed-node" data in disk files instead of RAM. This means you
can create really big DOM trees an not use all your RAM.
[PROJECT ABANDONED] This project will provide a 100% pure Java database implementation accessible via JDBC. The database is stored in plaintext files and loaded into RAM at runtime. Implements mySQL datatypes for trivial migration to/from mySQL.
C++ wrapper for SQLite that uses method names and behaves largely like mysql functions of PHP. Caches existing databases completely into RAM and overwrites update database upon objects' destruction.