NUB is a set of high class C++ codes providing indexes for variable-length keys, compressed resource files, and an istream interface for blocks of memory. Now supports Unicode keys and up to 17 trillion gigabyte file sizes. See www.cnub.org/NUB.ashx
PyTablet is a self organizing DB for semi-structured data. PyTablet behave like a huge persistable dictionary where keys are ID and values are dictionary-like objects that can link each other and contain simple values.
A unique flat-file database module, written in pure perl. True multi-level hash/array support, hybrid OO / tie() interface, cross-platform FTPable files, and quite fast. Can handle millions of keys/elements without significant slowdown.
[RETIRED] Tornado/DB is an object-relational mapping engine for Java. Features
include object caching, multi-table inheritance, compound keys, relationships, XML config., JSP tags, small footprint.
AI-powered service management for IT and enterprise teams
Enterprise-grade ITSM, for every business
Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity. Maximize operational efficiency with refreshingly simple, AI-powered Freshservice.
Tiger is an object-oriented database, written in java. It uses the concept of primary keys, aggregates, relations and indexes for finding java objects in persistent storage. Tiger have support for transactions and remote access.
Java Object DBMS stores serialized java objects in a file with keys. The keys are automatically maintained. Heavy use of introspection minimizes programming burden. Future plans include transactions, network (RMI, SOAP) access.