The Apache Derby project is pleased to announce a new feature release
of Derby, 10.4.1.3.
Apache Derby is a subproject of the Apache DB project.
Derby is a pure Java relational database engine which conforms to the
ISO/ANSI SQL and JDBC standards. Derby aims to be easy for developers
and end-users to work with.
Derby 10.4.1.3 can be obtained from the Derby download site:
http://db.apache.org/derby/derby_downloads.html.
Derby 10.4.1.3 introduces the following new capabilities:
* Asynchronous Replication
Allows you to maintain an up to date copy of your (master) database on
a different host (the slave). In the case of a crash on the master
database you can perform failover to the copy (slave database) and
continue serving client requests against your database.
* Security
o Shutting down the Network Server now supports user authentication,
and in fact requires credentials when authentication is enabled.
* SQL
o Table Functions. Using table functions and standard SQL, you can pose
sophisticated queries against in-memory collections, flat files, web
resources, non-relational databases, etc.. Table functions also let
you efficiently import data from web feeds, sensor logs, and other
relational databases.
o Unique constraints on nullable columns.
o SQL ROW_NUMBER() window function, (for an empty, inlined window
specification).
o Bracketed comments (/* ... */).
* Performance and Memory Usage
o New buffer manager with better concurrency.
o Statement cache in the client driver.
o Caching of isolation level and current schema in the client
driver.
* Administration
o Java Management Extensions (JMX) for Derby, allowing
local and remote monitoring and management of running Derby instances
(embedded or Network Server).
o Continuation prompt. ij adds a short "> " prompt to the next line
after a newline has been entered by the user without ending the
statement with a semicolon.
Derby 10.4.1.3 also has many bugfixes, including the fix for
DERBY-3347 which can cause unrecoverable database corruption. All
10.3 users are encouraged to upgrade to avoid potential corruption
issues.
--
Regards,
Dyre
|
