derby

APDPlat 共支持10种数据库：DB2、DERBY、H2、HSQL、INFORMIX、MYSQL、ORACLE、POSTGRESQL、SQL_SERVER、SYBASE。 数据库的默认配置信息在文件APDPlat_Core/src/main/resources/org/apdplat/db.properties中定义，用户可以根据自己的选择，在APDPlat_Web/src/main/resources/db.local.properties配置文件中覆盖默认配置。 1、如何指定使用哪一种数据库呢？ jpa.database=MYSQL jpa.database 配置项的值可为上述10种数据库之一，10种数据库的JDBC驱动已经集成到APDPlat中，其中5种定义到maven配置文件APDPlat_Web/pom.xml的依赖中，其余5种放置在APDPlat_Web/src/main/webapp/WEB-INF/lib目录中。 2、如何配置数据库连接信息呢？ #mysql db.driver=com.mysql.jdbc.Driver db.url=jdbc:mysql://localhost:3306/${module.short.name}?useUnicode=true&characterEncoding=UTF-8&createDatabaseIfNotExist

I just installed derby and I followed the instructions from here the exact same way it told me to but replacing the paths with my paths. But for some reason why i try to create a connection to connect to create a Database and run my sql scripts to create the tables and populate them it gives me a few errors firstly is this one ERROR 08001: No suitable driver found for jdbc:derby:SuperMarket;create=true Then when my sql scripts run I get this error IJ ERROR: Unable to establish connection I dont see what I did wrong this is the line i used to set the class path C:\> set CLASSPATH=%DERBY_INSTALL

I'm using Derby and I can't find a way to do case insensitive search. For example, I have a table that I'm searching that contains "Hello" but I put a search query in for "hello" and at the moment I won't get a result, but I want to. I can't find the correct syntax for it. Sara You can use the UPPER() or LOWER() SQL functions on both your search argument and the field, like in SELECT * FROM mytab WHERE UPPER(lastname) = UPPER('McDonalds') The most common way to do this is to use generated columns. Here's a nice writeup from one of the Derby developers: http://blogs.oracle.com/kah/entry/derby

I have not actually written any code yet and I'm just trying to run mvn hibernate5-ddl:gen-ddl to convert an existing class to DDL. What could cause the warning ConnectionProviderInitiator - HHH000181: No appropriate connection provider encountered, assuming application will be supplying connections ? Here's my persistence.xml <persistence> <persistence-unit name="manager1" transaction-type="RESOURCE_LOCAL"> <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider> <properties> <property name="hibernate.ejb.cfgfile" value="/hibernate.cfg.xml"/> </properties> </persistence-unit> <

For unit testing I use a derby in-memory database. Is there any chance to connect to this database using a tool like Eclipse Datasource Explorer when the test is running? I googled a lot and sometimes I found something like: Connection-URL: jdbc:derby://localhost:1527/memory/mydb... But it did not work for me. It says that 1527 is the default port. Is it possible at all to connect to a derby memory database with a tool like eclipse explorer? Does the database open a connection-port to connect to? Or is there something special I have to configure for this to work? Thanks, Alex Hi after some

I encounter problem with Hibernate EntityManager 3.5.3-Final when it comes to composite predicates. Example (not actual code snippet, but the idea should be clear): CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder(); Predicate predicate1 = criteriaBuilder.conjunction(); Predicate predicate2 = criteriaBuilder.conjunction(); // These are Boolean expression with common Root predicate1.getExpressions().add(expression1); predicate1.getExpressions().add(expression2); predicate2.getExpressions().add(expression3); predicate2.getExpressions().add(expression4); //... query.where

I downloaded the jar of Core Apache Derby database engine, which also includes the embedded JDBC driver (10.9.1.0) . But that jar doesn't include the .class file of ClientDriver in the jdbc package. Why is that ? Where can i find this class file ? I need this file to connect to derby database from tomcat as the server. Please provide the download link of the complete jar so that i get the required .class file. paulsm4 OK: have you looked on the Apache Derby page: http://db.apache.org/derby/releases/release-10.9.1.0.cgi Download db-derby-10.9.1.0-bin.zip It contains many files, including derby

If I create table with primary key is index automatically created for the table or does that need doing separately. i.e if this is the table ddl CREATE TABLE release(guid varchar(36) NOT NULL PRIMARY KEY, name varchar(255),xmldata CLOB(512 K)) do I also need to do CREATE INDEX release_idx ON release(guid) or not (I'm using Derby a database that comes with Java) You don't need to. The primary key is already an index. 来源： https://stackoverflow.com/questions/14646014/do-i-need-to-create-separate-index-for-primary-key-of-relational-database-table