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OrientDB is a NoSQL DBMS which can store 150,000 documents per second on common hardware. Even with a document-based database, the relationships are managed as in graph databases, with direct connections among records. You can traverse entire or parts of trees and graphs of records in a few milliseconds. It supports schema-less, schema-full, and schema-mixed modes, has a strong security profiling system based on users and roles, and supports SQL between the query languages. Thanks to the SQL layer, it's straightforward to use for people skilled in the relational world.

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2011-06-20 22:31 Back to release list
1.0rc2

多线程问题是固定的。索引搜索疯快。该经营者之间的SQL增加了。在SQL ALTER类和ALTER PROPERTY命令添加到重构数据库模式。控制台DROP DATABASE和INDEXES命令添加。 DATE类型添加到只处理与YYYY / MM / SS日期。不同的SQL（），工会（），相交（）和差（）函数增加了。 MVCC（多版本并发控制）系统也已启用默认情况下，外交易，但可以将其关闭。而+， - ，*，/，和％数学运算都支持SQL查询。安全检查是执行。其核心是与Java5的兼容，而服务器需要的Java6。
Multi-thread problems were fixed. Index searching was mad faster. The SQL BETWEEN operator was added. The SQL ALTER CLASS and ALTER PROPERTY commands were added to refactor the db schema. Console DROP DATABASE and INDEXES commands were added. The DATE type was added to handle dates only with YYYY/MM/SS. The SQL distinct(), union(), intersect(), and difference() functions were added. MVCC (Multi-version Concurrency Control) system is enabled also outside transactions by default, but can be turned off. The +, -, *, /, and % math operations are supported in an SQL query. Security checks are enforced. The core is compatible with Java5, while the server needs Java6.

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