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Let's add h2 database and hibernate-core dependency to pom. GeneratedValue(strategy GenerationType.AUTO). When a database table contains more than one primary key column, it is known as a composite primary key or a composite key. Due to spring-data-jpa in Spring Boot my entities are using the following id generation strategy. The project directory structure for your reference -. A Composite Primary Key is a combination of one or more columns that forms a primary key.
Hibernate data creator how to#
Hibernate data creator update#
you can use any database you just need to update the configuration to change the database connection.
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In the below hibernate example we are using the MYSQL database. For 20,000 records the process time was around 300 seconds 5mins.
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On repeated run it was between 90 seconds to 120 seconds. We reduce 10,000 record processing time to less than 2 mins. Create a simple java application using hibernate to read data from the database. to create It creates new table on every execution, if table already present it drops the table and create new one. After making this change we made another big improvement in the processing time.