When I execute: public void beginTransaction() { em.getTransaction().begin(); } following an active transaction started in the same way, I get the following exception:
I have jpa annotated entity class like: @Configurable @Entity @Table(name=\"PLAYERS\") public class Player
I use JavaDB (Derby) as an embedded database in my Java Swing application. I would like to detect and开发者_运维问答 print the version of JavaDB I\'m using. I have included derby.jar in my .jar-file f
I currently use INT as type for primary key in JavaDB (Apache Derby), but since I\'m implementing an distributed system I would like to change the type to java.util.UUID. A few questions about this:
im using Ecl开发者_如何学编程ipse Helios Java EE IDE for Web Developers,Version: 1.3.0. connection with derby embeded jdbc driver is workin fine but i cannot make connection with derby client jdbc dri
I am trying to access a read-only Embedded Derby database.It is available as myDB.jar.This jar has one folder of the Apache Derby database - myDB (log and seg0 folders and service.properties file).Th
I am looking for information how to check if a database exists -- from Java code -- in hsqldb and in Apache derby. In Mysql it is quite easy, because I can query a system table -- INFORMATION_SCHEMA.S
So presumably mysqldump can export to ansi compatible format so that you can import to other vendors\' databases.
I would like to convert an existing Derby datab开发者_C百科ase to MySQL. Try the DBCopy Plugin for SQuirreL SQL Client if you only need to convert the database once. There are other tools that may wor
I use Hibernate for JPA DB mapping with Derby DB. For a complex object structure I am getting \"org.apache.derby.client.am.SqlException: SELECT statement has too many items in GROUP BY, ORDER BY or se
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