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Object Databases
Object Database:
An object database (more correctly referred to as ODBMS or OODBMS for Object DBMS or Object Oriented DBMS, respectively) is a DBMS (database management system) that stores objects as opposed to tuples or records in a RDBMS (Relational Database Management System) or record-based DBMS. As data is stored as objects it can be interpreted only using the methods specified by its class. The relationship between similar objects is preserved (inheritance) as are references between objects.
From: en.wikipedia.org/wiki/OODBMS
Amos 2
Amos II is an extensible mediator system allowing different kinds of distributed data sources to be integrated.
The system is centered around an object-relational and functional query language, AmosQL. The system can store data in its main-memory object store. Furthermore, wrappers can be defined for different kinds of data sources and external storage managers to make them queryable. Several distributed Amos II peers can collaborate in a federation. Other features include The documentation includes documentation of basic peer communication primitives, multi-database queries and views, the wrapper functionality, and the predefined wrappers for relational databases through ODBC and JDBC.
The system is centered around an object-relational and functional query language, AmosQL. The system can store data in its main-memory object store. Furthermore, wrappers can be defined for different kinds of data sources and external storage managers to make them queryable. Several distributed Amos II peers can collaborate in a federation. Other features include The documentation includes documentation of basic peer communication primitives, multi-database queries and views, the wrapper functionality, and the predefined wrappers for relational databases through ODBC and JDBC.
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