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Objective database abstraction layer (ODAL) is a high-performance database manipulation framework. Features include query API, O-R mapping, data validation/conversion, stored procedure support, code generation. Minimal dependencies. Short startup time.
DruideDB is an embedded database (based on Object/XML mapping files) for Java applications. Both source code (DAO) and persistence layer (mapping) is generated. This DB stores everything as strings and handle auto-increments and multiple PKs.
The D2RQ API provides access to relational database content from within the Jena and Sesame RDF frameworks. D2R Server is a Semantic Web server and SPARQL endpoint based on D2RQ. Both use a declarative language for mapping database schemata to RDF.
SideNail is a Dynamic Object-Relational Mapping (ORM) API for Java. It basically consists in dynamically generating Java classes by extracting their definitions from SQL queries' ResultSets among many other sources. SideNail is NOT a persistence API
Flexoodb stands for Flexible Object Oriented Database API. Using your choice of RDBMS, Flexoodb represents objects as XML, allows proprietary Serializable objects to be embedded within the XML representation and manipulation using extended classes.
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A disk based production quality RTree based upon Guttmans quadratic split algorithm having following features:
Buffering with dirty write,
Index joins,
Tree Seeding,
Window and NN queries,
Runtime STR Packing capability,
Completely Thread safe.
Yaffa is an always evolving idea - now new approach for a data repository mixed with some features of object oriented databases with ease of use, no administration in mind and of course it will fit into the actual environment whatever that is.
Cayenne is an object-relational mapping framework written in Java. This Cayenne project at SourceForge is dedicated to hosting a legacy 1.2 release. For up to date releases please visit the new home at Apache. http://cayenne.apache.org
Java Object and Relation Persistence framework. No mapping configuration needed! Automatic mapping of object relations, inheritance, arrays ++. Also includes a DB-version migration framework. Powerful, yet easy to use.
Persistence Framework for Java with no JDBC or SQL knowlege needed. An easy to use Administration GUI is provided to hook into almost any database. No XML configuration mapping files! Easiest Java Database layer out there period.
Driver based data access layer writen in Java. With it you can execute SQL queries between data stored in different format, servers, ... if there is a driver to access them.
DORM4J (Dynamic Object-Relational Mapping for Java) is an O/R Mapping library for java. It uses annotation in jdk1.5 and dynamic feature of java language to implement O/R mapping function without additional XML config files.
...Uses XMLHTTP to send xml server data to a web browser HTML form with no refresh, reload or submit (like Google Suggest). Data can be SQL, object relational map (like Hibernate), XML, other mapping (like SOAP)
Mirage implements an complete 100% transparent Object Relational mapping for Java. It builds the database schema incrementally, to support incremental development and refactoring as it happens in Extreme Programming.
XORM is an extensible object-relational mapping layer for Java
applications. It provides interface-based persistence to RDBMSs using the Java Data Objects (JDO) API while allowing developers to focus on the object model, not the physical layer.
RDBS2J is a GUI based mapping tool from relational database schema to persistent java classes which use JDO as persistence mechanism. The mapping can be modified by the GUI. The current version is designed to create code for Apache-OJB.
[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.
Imagine this sql SELECT DIFF(f1.*,f2.*) FROM `/ws/src/test` f1,`/ws/src/test/.svn/text-base` f2 WHERE f1.filename=CONCAT(f2.filename,'.svn-base'); F8QL is about mapping filesystem as db, F(S slashed)QL is a jdbc compliant API patterned on mysql queries