derby

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Drop all constraints in Derby via JDBC

How can I drop all constraints in a Derby dat开发者_运维知识库abase via JDBC?You could query the system tables SYS.SYSCONSTRAINTS, SYS.SYSTABLES and SYS.SYSSCHEMAS to get all constraint names and the[详细]

2023-01-16 00:46 分类：问答
Have additional connections to Derby (read-only)

What I want to do: My application has a full connection to a Derby DB, and I want to poke around in the DB (read-only) in parallel (using a different tool).[详细]

2023-01-15 17:57 分类：问答
Is it possible to install apache derby eclipse plugin in myeclipse?

Ive got myeclipse ide, and want to install the ui plugin for derby so I can access ij from inside eclipse. The problem is when I drop the ui plugin components into the plugins folder the plugins dont[详细]

2023-01-15 12:57 分类：问答
Should I be autocreating my DB tables in code, or pre-init during install? [closed]

Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing[详细]

2023-01-14 12:55 分类：问答
Specify at run-time where to create or open Derby embedded database

I want to be able to define the folder where a Derby embedded database will be created after I start my application (which will someday migrate to a web application). The only way I know of setting th[详细]

2023-01-13 16:38 分类：问答
How to create table in MyEclipse Derby

where i can 开发者_如何学编程make the table when making sample program of Hibernate with MyEclipse DerbyFrom the MyEclipse Derby Database Server Tutorial (and I warmly recommend reading it entirely):[详细]

2023-01-12 08:51 分类：问答
'ALTER TABLE' cannot be performed because table does not exist

I\'m using JPA 2 with Eclipselink 2 and a Derby in memory db for my tests. When I start my little test programm I get the following exception:[详细]

2023-01-11 20:37 分类：问答
Derby INSERT SELECT null pointer exception

I\'m writing a Java application that\'s working with Apache Derby via JDBC. I\'m having problems with the code in the following snippet:[详细]

2023-01-11 18:27 分类：问答
How can I get the top x% of values in a database table

How can I get the top x% of values in a database table. For example, I have a log file t开发者_StackOverflowhat I loaded into a db table. I would like to throw out the longest running 1% of requests[详细]

2023-01-11 05:09 分类：问答
JavaDB - Checking if a database exists

We created a java appli开发者_Python百科cation which uses the JavaDB database in Netbeans IDE. We want the program to check every time it starts if the database\'s tables have already been created, an[详细]

2023-01-10 22:52 分类：问答