About modify

release

2.4.6

Release date: 2013-01-16 Download (5.42 MB) Binary:  objectdb-2.4.6.zip You should start by following a  tutorial or reading the manual ...

 
release

2.5.0

Release date: 2013-04-16 Download (5.42 MB) Binary:  objectdb-2.5.0.zip You should start by following a  tutorial or reading the manual ...

 
release

2.2.3

Release date: 2011-04-29 Download (5.07 MB) Binary:  objectdb-2.2.3.zip You should start by following a  tutorial or reading the manual ...

 
release

2.5.1

Release date: 2013-05-30 Download (5.43 MB) Binary:  objectdb-2.5.1.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

alter table

Hi: After a table built by real data, how to alter table structure, such as: alter table add column ... alter table add index ... TIA #1 2011-08-23 05:11 Hi: After a table built by real data, how to alter table structure, such as: alter table add colu ...

 
forum_thread

Optimization Question

One of our uses for your ObjectDB software is in maintaining the current state of a large number of data objects called tracks. These tracks change very frequently over time (every 10-15 seconds is not unreasonable), but they are also very large complex data structures so it's extremely difficult to identify exactly what fields have changed from one update to the next. Currently the following sequence executes when a track update comes in: - If it’s a new track simply add it to the database. #1 2010-06-16 15:41 One of our uses for your ObjectDB software is in maintaining the current state of a large number of data objects cal ...

 
manual

JPA Entity Fields

Explains how to define and use primary keys in JPA, including composite and embedded primary keys. Fields of persistable user defined classes (entity classes, embeddable classes and mapped superclasses) can be classified into the following five groups: Transient fields Persistent fields Inverse (Mapped By ...

 
release

2.4.7

Release date: 2013-02-25 Download (5.42 MB) Binary:  objectdb-2.4.7.zip You should start by following a  tutorial or reading the manual ...

 
manual

GROUP BY and HAVING clauses

Explains how to use the GROUP BY and HAVING clauses in a JPA/JPQL query.... where(restriction) CriteriaQuery's method Modify the query to restrict the query result according to the specified ...

 
release

2.5.2

Release date: 2013-08-13 Download (5.43 MB) Binary:  objectdb-2.5.2.zip You should start by following a  tutorial or reading the manual ...